JP2002157228A - Input canceling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input cancel method for plural input items with which an input forms is determined for inputting a value for each of plural input items and cancel can be performed back to any arbitrary input item by inputting a single digit delete key during inputting to the arbitrary input item. SOLUTION: When the single digit delete key is inputted in the case of inputting the value to the arbitrary input item, while defining the input item, to which a value is inputted just before, as a target, the display of a numerical value on the right side of the display area of this input item is deleted and the display of a numerical value remained without deleting the display of this input item is moved to right by one digit. When the number of digits after deletion in this input item becomes '0', the input item to become the target of deletion by the single digit delete key is made into input item back for one along with the order of input in the input format.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of calculating the number of days, a method of canceling an input format of a plurality of input items with respect to a predetermined format, and a method of holding a set value. In particular, the present invention relates to a method of canceling an input for a plurality of input items among functions of an electronic desk calculator provided with a memory value setting method for a memory.

[0002] In the electronic desk calculator according to the present invention, in the following description, terms of date calculation, period calculation, and number of days calculation appear. These terms are as follows. Period operation indicating the operation after the number of days elapsed. Period operation: Indicates the operation from a certain date to a different date. Day operation: It is used as a unified term such as the general term for both the period operation and the period operation. .

[0003]

2. Description of the Related Art For reference, Japanese Patent Application Laid-Open Nos. 51-75356 and 58-11 / 1988 disclose conventional techniques for calculating days.
No. 4263, JP-A-60-108956, JP-A-3-10895.
208168, JP-A-51-75357, JP-A-5-75357
There are techniques disclosed in respective publications such as 1-1103741, JP-A-52-51839 and the like.

In the technique disclosed in Japanese Patent Application Laid-Open No. 51-75356, a date is input by using the same input unit as that used in the four arithmetic operations, and the day of the week is calculated (referred to as prior art 1).

In the technique disclosed in Japanese Patent Application Laid-Open No. 58-114263, the number of days excluding a specific day of the week is calculated when calculating the number of days (referred to as Conventional Technique 2).

According to the technique disclosed in Japanese Patent Application Laid-Open No. 60-108956, the number of days up to a certain day of the week of a certain month is calculated by an electronic desk calculator having a number of days calculation function. Do).

In the technique disclosed in Japanese Patent Application Laid-Open No. 3-208168, the speed of the arithmetic processing of the number of days is improved and the operability is improved (referred to as prior art 4).

In the technology disclosed in Japanese Patent Application Laid-Open Nos. 51-75357 and 51-103741, in an electronic desk-top computer having four arithmetic operations, a decimal point is used to separate year and month, and month and day. Thus, the number of days is calculated using the same input unit as the input unit for the four arithmetic operations (referred to as Conventional Technique 5).

In the technique disclosed in Japanese Patent Application Laid-Open No. 52-81839, a date key is provided. Then, for example, when the date key is input after the key input of 1,0, [,], 1,9, "10.
19 "is displayed. Further, a value indicating the day arithmetic is set in the flag register provided only for indicating the distinction between the four arithmetic operations and the day arithmetic. And the value input is completed,
When the [-] key is operated, the value of the flag register is read in order to determine whether to perform the four arithmetic operations or the number of days operation. Since the value of the flag register read at this time indicates the number of days calculation, the calculation unit performs the number of days calculation based on the input value (refer to Conventional Technique 6).

Further, two methods have been proposed for inputting values to a plurality of input items such as date, hour, minute and second.

The first input method is a method of inputting a decimal number and inputting a decimal point to indicate a break of each input item. Then, in the case of using this input method, when the one-digit deletion key is input, the respective inputs are canceled in the reverse order of the input order. Therefore, at any time, it is possible to redo the input to an arbitrary place. However, in this input method, since the display is difficult to understand, the following second input method is used exclusively.

A second input method is a method for setting an input format exclusively for data. For example, in the case of inputting the date, the display area corresponding to each of the year, month, and day is fixedly provided, and the corresponding input is displayed in the corresponding display area. Then, in the case of canceling the input, this method is such that only the value in the display area being input can be canceled (referred to as Conventional Technique 7).

As a conventional technique for preventing erroneous setting of data in a memory, there is a configuration provided with a mode switch for setting a mode in which the memory can be operated. In this configuration, the memory operation is enabled only when the mode switch is turned on. When the setting key is operated in the state where the memory operation is enabled, the input value is set in the memory. Therefore, when the mode switch is turned off, the memory contents are protected (referred to as prior art 8).

A different configuration for achieving the same object is that an input value can be set in a memory only when two or more keys are operated in a predetermined order. There is a configuration (conventional technology 9).

[0015]

Generally, in the calculation of the number of days in financial calculation, it is required to calculate the number of days based on the distinction between cross-enter, cross-drop, and cross-drop. However, conventional techniques 1 to 6
In, the method of calculating the number of days is fixed to either one of two-sided, one-sided or two-sided. Therefore, when the calculation method is bisection, but one-sided or two-sided calculation results are required,
The user has to convert the result of the calculation into the one-sided or the two-sided drop from the result of the calculation, which causes a problem that the time and effort of the calculation increase.

Therefore, the purpose of the first embodiment to be referred to is that such conversion to one-sided or two-sided drop is not required,
It is an object of the present invention to provide a day calculation method capable of performing a day calculation by an arbitrary calculation method of double entry, single drop or double drop according to designation.

The purpose of the second embodiment is to share a switch for designating round-up, round-off, and round-down in the four arithmetic operations and a switch for designating double-in, single-drop, and double-drop. Accordingly, it is an object of the present invention to provide a method of calculating the number of days that can save the cost of the switch and the space for installing the switch.

In the prior art 6, the value input by the numerical keys is displayed in the same format on the display unit both when the date key is operated and when the date key is not operated. That is, even when the input for the number of days calculation is performed, the display format is the same as that for the input of the four arithmetic operations. For this reason, in the case of performing a mixture of the four arithmetic operations and the day arithmetic, is the four arithmetic operations performed?
Alternatively, there has been a problem that it is difficult to distinguish whether the day calculation is being performed.

On the other hand, when a mode for distinguishing between day arithmetic and four arithmetic operations is provided, the distinction between day arithmetic and four arithmetic operations becomes clear. However, when it is necessary to continuously perform the day arithmetic and the four arithmetics, the arithmetic mode must be frequently switched between the four arithmetics and the day arithmetic.
There has been a problem that the operation becomes complicated.

Therefore, an object of the third embodiment to be referred to is to provide a method of calculating the number of days in which the four arithmetic operations and the number of days operation can be clearly distinguished and executed without switching the mode. is there.

The memory operation corresponding to the operation of the [M +] key or the [M-] key, or the memory operation for the GT memory 24, is only possible for the operation result of the four arithmetic operations. Therefore, when the total number of days obtained by each of the day calculations is required,
It was necessary to record the obtained number of days and add the recorded number of days.

Therefore, an object of a fourth embodiment to be referred to is to provide a day calculation method capable of performing a memory calculation on the calculation result of the day calculation.

Further, the constant operation for treating an already input value as one of the target values of the operation is limited only to the range of the four arithmetic operations. For this reason, when performing the number of days calculation, in the period calculation, it is necessary to input two types of dates each time the calculation is performed, even if one date is the same. Moreover, in the due date calculation, even when the date or the number of days is the same, it is necessary to input the date and the number of days each time the calculation is performed. For this reason, there has been a problem that the trouble of key input is increased and the operation is troublesome.

Therefore, the purpose of the fifth embodiment to be referred to is to eliminate the trouble of inputting two types of dates for each operation and to perform the number of days operation only by inputting one of the values. An object of the present invention is to provide a method of calculating the number of days that can be performed.

Further, when performing the number-of-days calculation, when trying to input a date, it is necessary to input each value of year, month and day. Therefore, there is a problem that the number of key operations increases, and input is troublesome.

When the number of days is calculated by inputting only the month and the day, the calculation result is also indicated only by the month and the day. Therefore, for example, when 731 days after January 1 is obtained, January 2 is obtained as a calculation result in a one-sided drop. On the other hand, when the number of days between January 1 and January 2 is obtained, one day is obtained as a calculation result, and there is no corresponding relationship between the calculation for obtaining the number of days and the calculation for obtaining the date. Had occurred.

Therefore, the purpose of the sixth embodiment to be referred to is to limit the range that can be handled to one year.
It is an object of the present invention to provide a number-of-days calculation method capable of maintaining an anatomical relationship between a calculation for obtaining the number of days and a calculation for obtaining a date even when input of a year is omitted.

If the input of the year is omitted, it is impossible to distinguish between a normal year and a leap year. Therefore, there is a problem that when the calculation of the leap year becomes necessary, the conversion is required later.

Therefore, an object of the seventh embodiment is to provide a method of calculating the number of days that can handle a leap year even when the input of the year is omitted.

In the prior art 7, the input can be canceled only for the item being input. Therefore, for example, if the input item is month and day, and the day is input, and it is necessary to change the month value, it is not possible to cancel the month value. After that, you need to start over from the beginning. For this reason, there has been a problem that the input is troublesome.

Therefore, this problem is the main object of the present invention, and in the eighth embodiment according to the present invention, an input cancellation that can be traced back to an arbitrary input item by inputting a one-digit deletion key. It is to provide a method.

In the configurations of the prior arts 8 and 9, two or more switches are required. However, in the electronic desk calculator, the number of switches that can be provided is limited because of the area occupied by the key switches, the cost of the switches, and the like. Assigning a plurality of functions to one key switch complicates the operation, and is likely to cause an erroneous operation.

Therefore, the purpose of the ninth embodiment to be referred to is that the setting value of the memory is inadvertently changed even when the setting of the value in the memory is performed by one key switch. It is an object of the present invention to provide a memory value setting method capable of preventing the above.

[0034]

In order to solve the above-mentioned problems, an input canceling method according to the present invention includes a specific input format mode in which an input format for inputting a value for each of a plurality of input items is determined. In electronic computers,
The mode is switched to the input format mode, a value is input to a desired input item of the input format mode, and a one-digit deletion key is input at the time of inputting the value. For the item, the display of the numerical value displayed on the right side of the display area of the target input item is deleted, and the display of the numerical value remaining without being deleted in the target input item is displayed by one digit on the right side. When the number of digits after the deletion is 0 in the target input item, the input item to be deleted by the one-digit deletion key is moved backward by one in the input order in the input format. As the input items,
It is characterized by:

(Operation) According to the input canceling method of the present invention,
When the one-digit deletion key is input, the numerical value at the right end of the display area is deleted for the input item for which the value is being input, and the numerical value remaining without being deleted is shifted to the right by one digit. In other words, the input of the last input value in the corresponding input item is canceled. Then, when the number of digits of the value after deletion becomes 0, it is necessary to go back one input item. For this reason, if the input item to be deleted is moved to the input item which is moved backward by one in the input order in the input format, the input is canceled in a direction in which the input order of the values is reversed. .

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an input canceling method according to the present invention will be described below in detail with reference to the drawings.
For reference, embodiments of the days calculation method and the memory value setting method will also be described in detail with reference to the drawings.

FIG. 29 is a plan view showing the appearance of an electronic desk calculator to which the embodiment of the present invention and the reference embodiment are applied. The electronic desk calculator 1 is roughly classified into an LCD.
A display unit 2, a switch 3, and a keyboard 4 are provided.

The LCD display unit 2 is a block for displaying inputted numerical values, calculation results, and the like.

The switch 3 has three switches: a GT switch 5, a TAB switch 6, and a designated switch 7. A GT switch 5 is a switch for designating whether or not to perform a cumulative operation on the GT memory, and a TAB switch 6
Is a switch for specifying the rounding position of the operation result at the time of the four arithmetic operations, and the designation switch 7 is for specifying the rounding method of the operation result at the time of the four arithmetic operations, and specifying the double-sided, single-sided, and double-sided at the time of day arithmetic. It is a switch that doubles.

The designation switch 7 is a three-position switch, which is the designation switch in the second embodiment. That is, the switch is used to specify each of the three types of rounding methods in the four arithmetic operations.
It is a switch for specifying one-sided or two-sided.

More specifically, when it is set at the left end in the figure, the round-up operation in the four arithmetic operations is specified, and the double entry in the day arithmetic operation is specified. When set at the center position, rounding in the four arithmetic operations is designated, and one-sided omission in the day arithmetic is designated. Also, when set to the right end, the truncation in the four arithmetic operations is specified, and the two-sided omission in the days operation is specified.

In the number of days operation, round-up, round-off, and round-down operations are not performed. In the four arithmetic operations, double-sided, single-sided, and double-sided operations are not performed. For this reason, the designation switch 7 performs designation of three types of arithmetic methods in the four arithmetic operations and designation of three types of arithmetic methods in the day arithmetic operation in parallel with three positions.

The keyboard 4 is used to obtain numerical keys and decimal point keys used for the numeral, operator keys (including the [〜] key 9) for specifying the operation method in the four arithmetic operations and the day arithmetic operation, and for obtaining the operation results. [=] Key, [Date] key, keys for memory operation and cumulative operation (including GT key 10), one digit delete key 11 for numeric correction, numeric clear key, used for tax rate setting Key 8 and the like.

The instruction key in the third embodiment may be a key that is not used for designation in both arithmetic operations and day arithmetic operations and for inputting numerical values. In the embodiment, the instruction key is [ Date] key.

FIG. 30 is a block diagram showing the electrical configuration of the electronic desk calculator 1. The memory 33, C
PU31, KEY switch 34, ROM32, LCD
A drive circuit 35 and an LCD display unit 2 are provided.

The CPU 31 is a block for performing various controls such as reading processing of the key switch 34, processing of four arithmetic operations and days arithmetic processing, and displaying processing results, and ROM.
32 is a program for arithmetic operation and day arithmetic,
A block storing various character data and the like for display, the KEY switch 34 includes three switches 5 to 7,
A switch composed of various keys of the keyboard 4 and an LCD drive circuit 35 are blocks for driving the LCD display unit 2.

The memory 33 is a block for temporarily holding various data, and is provided with seven areas 21 to 27.

Xreg 21 is used to store numerical values, calculation results, and the like.
At each time, the value displayed on the LCD display unit 2 is stored. Yreg 22 stores the operand (the value input before the operation of the operator key). Memory 23, GT
The memory 24 is mainly used in the fourth embodiment,
The accumulated value and the like are stored.

Each of the Xreg 21, the Yreg 22, the memory 23, and the GT memory 24 has an area for storing a value. Also, to store a flag indicating whether the stored value is a decimal number which is an object value of the four arithmetic operations, a date which is an object value of the day operation, or a number of days which is an object value of the day operation. Area is provided.

When the value is transferred from one area 21 to 24 to another area 21 to 24, the flag is also transferred at the same time. When the areas 21 to 24 are cleared, the flag is set to a flag indicating a decimal number (value 0).

The operator flag 25 stores which of +,-, ×, に お け る in the four arithmetic operations and +,-,-in the day arithmetic is specified. Note that Yreg2
By the flag of 2, the value stored in Yreg 22 becomes 1
It is possible to determine whether it is a decimal number or a date. Therefore, whether the operation is the four arithmetic operations or the number of days operation can be determined by the flag of Yreg22.
Therefore, there are only four types of flags stored in the operator flag 25.

The state flag 26 stores a flag indicating whether the operator key is operated or not before the operation is performed, or whether it is in the numeral state.

The setting counter 27 is a counter used in the ninth embodiment, and will be described later in detail. The memory 13 is provided with a tax rate memory (not shown), and the tax rate memory is also used in the ninth embodiment.

In the following, items common to the examples used in the embodiments will be described.

In the calculation for calculating the date when the input number of days has elapsed from the input date (due date calculation 1), key operations of date, [+], number of days, [=] are performed. Calculation for calculating the date when the input number of days is traced back from the input date (due date calculation 2)
Then, key operations of date, [-], number of days, and [=] are performed. In the period calculation for calculating the number of days between two types of input dates, key operations of date, [，], date, and [=] are performed.

The keys [+], [-], and [=] operated in the due date calculation are the same as the keys used in the four arithmetic operations. The [-] key can be assigned to the [x] key, [キ ー] key, or [%] key used in the four arithmetic operations. As shown in FIG. 29, a [-] key 9 is separately provided to avoid confusion of operation.

In the first to fifth embodiments, it is possible to input year, month, and day values for the input date. However, in the sixth embodiment, Since the input of the year is omitted, in the example, only the input of the month and the day is performed in conformity with the sixth embodiment.

In the first, second, fourth to seventh embodiments, the method of inputting the date and the number of days and the input format are as follows.
Although any input method and input format can be used, in the example, the input method and the input format are in accordance with the third embodiment.

In the first embodiment, any designation method can be used for the designation of double entry, single drop, and double drop. In other words, it is possible to provide a flag area for designating double-sided, single-sided, and double-sided drops in the memory 33 and write the flag selected in a menu or the like. However, in the example, for the sake of consistency with the second embodiment, a double switch, single drop, and double drop are specified by the specifying switch 7 for specifying round-up, round-off, and round-down in the four arithmetic operations.

Further, the cross-in, one-sided, and two-sided operations are operation methods defined in the period operation, but in order to avoid giving different operation results in both the date operation and the period operation, In the due date calculation, distinction is made between double-sided, single-sided, and double-sided.

(First Embodiment and Second Embodiment) Examples of the first and second embodiments which serve as references of the present invention will be described below.

FIG. 1 to FIG. 3 are explanatory diagrams showing the display flow in one embodiment of the days calculation method according to the first and second embodiments.

FIG. 1 shows that when the number of days from June 30 to September 13 is calculated, each of the key operations is
The flow of the display content displayed on the LCD display unit 2 is shown.

The display 101 shows the display of the initial state before the calculation, and the display 102 is the input of June 30 and the input of the operator key for instructing the period calculation. The display after the operation of each key of 3, 0, [-] is shown. Display 103
Shows a display after the key operation of 9, [date], 1, 3 which is an input on September 13.

The display 104 shows the display after the [=] key operation when the designation switch 7 is in the double-sided mode.
The number of days excluding the three days is shown.

The display 105 shows the display after the [=] key operation when the designation switch 7 is a one-sided drop.
The number of days excluding one of the three days is shown.

The display 106 shows the display after the [=] key is operated when the designation switch 7 is in the double-sided state.
This shows the number of days obtained by adding both days of three days.

FIG. 2 shows a case where the date when the number of days obtained by the period calculation by the key operation has elapsed from June 30 as a start date is obtained, and the LCD display unit 2 corresponds to each key operation. 2 shows the flow of the display contents displayed in FIG.

The display 111 shows the display of the initial state before the calculation, and the display 112 is the input of June 30 and the input of the operator key for instructing the date calculation. The display after operation of each key of 3, 0, [+] is shown.

The display 113 shows the display after each key operation of 7, 4, [date], which is the input of the number of elapsed days. And display 114
Shows the display after the key operation of [=] when the designation switch 7 is a double drop, and 74 days have passed since June 30 when both ends are excluded from the number of days. Indicates the date of the change.

The display 115 shows the display after each key operation of 7, 5, [date] for inputting the number of elapsed days. And display 116
Shows the display after the key operation of [=] when the designation switch 7 is a one-sided drop. When the one-sided date is added to the number of days when the one-sided drop is performed, the June 30 to the 75th is displayed. Indicates the date that has passed.

A display 117 shows a display after each key operation of 7, 6, [date] for inputting the number of elapsed days. And display 118
Indicates the display after the key operation of [=] when the designation switch 7 is in the double-turn mode. When both dates are added to the number of days as the double-turn, 76 days have passed since June 30. Indicates the date of the change.

FIG. 3 shows a case where the date when the number of days obtained by the above period calculation is traced back with September 13 as the end date is determined, the LCD display unit 2 corresponding to each key operation.
2 shows the flow of the display contents displayed in FIG.

A display 121 shows a display of an initial state before calculation, and a display 122 is an input of September 13 and an input of an operator key for instructing a due date calculation. The display after operation of each key of 3, 0, [-] is shown.

The display 123 shows the display after each key operation of 7, 4, [date], which is the input of the number of days to go back. And display 124
Indicates a display after the key operation of [=] when the designation switch 7 is a double drop, and when the double drop is performed and the dates at both ends are excluded from the number of days, 74 days from September 13 are traced back. Indicates the date.

The display 125 shows the display after each key operation of 7, 5, [date], which is the input of the number of days to go back. And display 126
Shows the display after the key operation of [=] when the designation switch 7 is a one-sided drop. When the one-sided date is added to the number of days when the one-sided drop is performed, the date from September 13 to 75 is Indicates a date that goes back.

The display 127 shows the display after each key operation of 7, 6, [date], which is the input of the number of days to go back. And display 128
Shows the display after the key operation of [=] when the designation switch 7 is set to both inputs. In the case of adding both dates to the number of days as double input, 76 days from September 13 is traced back. Indicates the date.

In other words, with respect to the period calculation and the date calculation which is the inverse operation of the period calculation, the calculation results that are reversibly established are obtained in each of the two drop, one drop, and double drop calculation methods.

FIGS. 4 to 6 are flow charts for obtaining the display flow shown in FIGS. 1 to 3. In the subroutine of the number of days calculation, correction processing corresponding to each designation of double entry, single drop, and double drop is performed. The flowchart of the added calculation method is an example of the day calculation method according to the present embodiment (the first embodiment and the second embodiment).

FIG. 4 shows a subroutine for calculating the number of days between the input date 1 and the input date 2.
A reference date is set in advance. The reference date is the date of the beginning of the year because the configuration of the embodiment omits the input of the year.

It is calculated what day the input date 1 corresponds to from the beginning of the year. This calculation result is set as the number of days 1 (step S1). When date 2 is entered,
It is calculated what day the date 2 corresponds to from the beginning of the year. The result of this calculation is set to the number of days 2 (step S2). Then
Day number 2−Day number 1 is calculated. This calculation result indicates the number of days in the case of a one-sided drop (step S3). Then, the setting of the designation switch 7 is referred to (step S4).

If the setting is one-sided, step S3
The operation is terminated because the result of the calculation is the desired result. When the setting is a double drop, since one day is less than the calculation result of the one drop, one day is subtracted from the calculation result of step S3, and the operation is terminated (step S5). When the setting is both-sided, one day is added to the calculation result of step S3 since the calculation result is one day longer than the one-sided calculation result, and the operation is terminated (step S6).

That is, the flowchart shown in FIG.
This is a flowchart in which a configuration including steps S4 to S6 is added to the configuration of the related art including steps S1 to S3.

FIG. 5 shows a subroutine for obtaining a date after the input number of days from the input date.

After the date and the number of days are input, the setting of the designation switch 7 is determined (step S7). In addition, when the number of days after the input is the same, the number of days is one day later in both droppings than in one drop. In addition, 1
Day earlier. Therefore, when the designation switch 7 is set to the double drop, one day is added to the input number of days (step S8). Further, when the number of days is set, one day is subtracted from the input number of days (step S).
9).

Next, the number of days that are not corrected in the case of a one-sided drop and the number of days that are corrected in the case of a double-sided or double-drop are added to the input date to calculate a new date (step S1)
0). This date often exceeds the maximum value of the days constituting each month, for example, January 32. Therefore, the calculation result is corrected so that the obtained date corresponds to a calendar date, and the operation is terminated (step S11).

That is, the flowchart shown in FIG.
This is a flowchart in which a configuration including steps S7 to S9 is added to the configuration of the related art including steps S10 and S11.

FIG. 6 shows a subroutine for obtaining a date which is the number of days before the input date.

After the date and the number of days have been input, the setting of the designation switch 7 is determined (step S12). In addition,
If the number of days is the same as the number of days before the input number of days, the date is one day earlier than the one-sided one. In both cases, the date is one day later. Therefore, when the designation switch 7 is set to the double drop, one day is added to the input number of days (step S13). If the number of days has been set, one day is subtracted from the input number of days (step S14).

Next, the number of days not corrected in the case of a one-sided drop and the number of days corrected in the case of a double-sided or double-sided input are subtracted from the input date, and a new date is calculated (step S1).
5). As for this date, for example, a value indicating the day is often 0 or less, such as February 1st. Therefore, the calculation result is corrected so that the obtained date corresponds to the calendar date, and the operation is terminated (step S16). If the value obtained in step S15 is February-1st, the corrected date will be January 30th.

That is, the flowchart shown in FIG.
This is a flowchart in which a configuration including steps S12 to S14 is added to the configuration of the related art including steps S15 and S16.

(Third Embodiment) An example of the third embodiment which is a reference of the present invention will be described below.

In order to distinguish between the display of the date which is the target value of the day calculation and the display of the decimal number which is the target value of the four arithmetic operation, the display is provided with a four arithmetic operation format and a day arithmetic format. The four arithmetic operation formats are the same as the decimal display format in the related art. The format for calculating the number of days is as follows:
Between the numerical value indicating the month and the numerical value indicating the day, as a symbol that is not used for displaying a decimal number, for example, a method of displaying a blank, or a symbol of “month” and “day” is provided, and these symbols are applied. It is possible to use the method of displaying after the numerical value.

Further, in order to distinguish the display of the number of days, which is the target value of the number of days calculation, from the display of the decimal number, the number of days calculation format is replaced by a symbol which is not used for displaying the decimal number after the number of days. Or a method of providing a “day” symbol and displaying this symbol after the corresponding numerical value.

However, in the present embodiment, a display method similar to that of the above-described embodiment in the above embodiment is adopted. That is, in the display of the date, “month” is displayed after the numerical value indicating the month, and “day” is displayed after the numerical value indicating the day and the numerical value indicating the number of days.

As for the method of inputting the date, after inputting the numerical value indicating the month in decimal and inputting the [Date] key which is an instruction key, the input format is changed to the date format. In the case of inputting the number of days, a method is adopted in which when a decimal number indicating the number of days is input and then a [date] key is input, it is determined that the number of days has been input.

[0097] Regarding Xreg21 and Yreg22 in which input values are stored, values corresponding to decimal numbers, values corresponding to dates, and values corresponding to the number of days are set in the flags. Then, in the case where four arithmetic operations such as multiplication are continuously performed on the operation result obtained by the period operation,
The number of days, which is the operation result, is converted into a numerical value indicating a decimal number (the flag is changed to a decimal number flag), thereby obtaining the operand.

FIG. 7 is an explanatory diagram showing a display flow in one embodiment of the number of days calculation method according to the present embodiment. The relationship between key input and display flow will be described with reference to FIG. Note that the display in FIG. 7 shows a case where the number of days calculation is executed by dropping.

The display 130 shows the initial display at the start of the operation, and the display 131 shows the display after the key operation of 2, [+], 3, [=] instructing the four arithmetic operations.

The display 132 shows the display after the key operation of 7 which is a decimal number input. The display 133 is
The numerical value already input indicates the date, and the decimal number input next indicates the day. The display after the key operation of [DATE], 2, 1 is shown. The display 134 shows the display after the key operation of [〔], 8, [date], 8, [=]. That is, the display 13
4 is a display indicating the number of days from July 21 to August 8.

When [×] is input, it means that continuous calculation is performed for the number of days obtained as the calculation result. Therefore, the display is changed from the display 134 to the display 135, indicating that the calculation result has been converted from days to decimal.

The display 136 shows the calculation result after the key operation of 3, [=] has been performed. That is, the display shows the result of the operation of “18 × 3”.

The display 137 shows the display after the key operation of 7, [date], 2, 1, [+], indicating the input of the date calculation. The display 138 shows the display after the operation of the keys 1, 2, and the display 139 shows the display after the operation of the key of [date]. That is,
This indicates that the calculation is for calculating a date 12 days after the date displayed as the display 137. Then, when [=] is input, the display 140 is displayed, and the desired date is displayed.

Next, when [+], 5, [=] is input, since the value obtained before the input is a date, an operation for obtaining a date five days later is performed, and the display 141 is displayed. , The desired date is displayed. That is, in the due date calculation, the same calculation is performed even if the number of days is a decimal number.

The display 142 shows the display after the key operation of 1, [date], 1, [+], 31, [date], [-]. That is, in the due date calculation, the calculation result is displayed in both the input of [=] and the input of [-]. The displayed date is a value to be operated on in the period calculation.

Therefore, when 3, [date], 1, [=] is subsequently input, a period calculation from February 1 to March 1 is performed, and as shown in the display 143, the number of days to be obtained is calculated. Is displayed. After the key operation of 4, [date], 1, [-], 5, [date], 1, [+], the display is as shown at 144.
That is, in the due date calculation, instead of inputting [=],
The calculation result is also displayed by inputting [+]. Further, since [+] is input, it is indicated that the calculation is continuous for the obtained days, and the display is a value converted into a decimal number. After the key operation of 5, [=], the value 5 is added to the value displayed on the display 144, and the display becomes 145.

That is, the predetermined arithmetic operation is performed based on the key operation and without discrimination between the day arithmetic operation and the four arithmetic operations.

FIGS. 8 to 10 are flowcharts showing an example of the number of days calculation method according to the present embodiment.

FIG. 8 shows a processing method corresponding to the input of the [=] key.

In step S21, branching is performed depending on the type of operation. In other words, the flag of Yreg 22 always indicates the date when the number of days is calculated. Therefore, when the flag of Yreg 22 indicates a decimal number (the target value of the four arithmetic operations), the four arithmetic operations of step S22 are executed.

When the flag of the Yreg 22 indicates the date (the target value of the number of days calculation), the calculation according to the type of calculation stored in the operator flag 25 is performed. That is, when the operator flag 25 indicates [〔], the period calculation of step S24 is performed. When the operator flag 25 indicates [+] or [-], the due date calculation in step S25 is performed. Note that, in the due date calculation in step S25, Xre
When the numerical value stored in g21 is a decimal number, the numerical value is converted into a format of days, and then a due date calculation is performed.

When the GT switch 5 is on, GT addition processing is performed. The details of this processing will be described later.

FIG. 9 shows a processing method corresponding to the input of the [+] key.

Now, it is assumed that the operator operates the operator keys continuously, such as X, [+], X, [+] (X is a decimal number or a date).
The processing at this time is performed from step S26 to step S27.
Move to In step S27, Yreg22
(Indicating whether the value is a target value of the four arithmetic operations or a target value of the number of days operation) and the contents of the operator flag 25, the four arithmetic operations in step S28, or the period arithmetic operations in steps S29 and S30, Alternatively, the flow branches to the due date calculation in step S31. This branching method is the same as the branching method in step S21.

The process branches from step S27 to step S28 when the key operation indicates a decimal operation such as 1, [+], 2, [+]. At times, four arithmetic operations of decimal numbers are executed as in the conventional case.

The process branches from step S27 to step S29 in that the key operation is performed after the period operation key operation, for example, date, [-], date, [+], etc. ]
This is when a key is operated. Therefore, step S2
After performing the period calculation at 9, the calculation result is converted to a decimal number at step S30.

The process branches from step S27 to step S31 because the key operation is, for example, date, [+], number of days, [+], number of days. +] Key. Therefore, in step S31,
A due date calculation, which is a calculation indicated by the [+] key input for the first time, is executed.

Then, steps S28, S29, S30,
When the processing of S31 is completed, the operator flag 25 is set to [+] in step S34 to correspond to the second operation of the [+] key.

On the other hand, in step S26, if the operator has not operated the operator key continuously, such as, for example, 1, [+], the process proceeds to step S32. Then, branching is performed according to the flag of the number.

If the numeral is a decimal number, the operator flag 25 is set to [+] in step S34. When the set number is the number of days, the number of days with the number of days as the operand is not calculated, so that the number of days is converted to a decimal number in step S33, and the operator flag 25 is set to [+] in step S34. . If the numeral is a date, the operator flag 25 is set to [+] in step S34.

If the operator key operated immediately before the processing of step S26 is the [-] key, the operator flag 25 is set to [-] in step S34 of the series of operations described above. Is set differently. The same applies to the [x] key and the [÷] key. For the [~] key, the value set in the operator flag 25 is the same as that of the [x] key, so that the processing is performed for the [x] key. It will be the same as the case.

FIG. 10 shows a processing method corresponding to the input of the [Date] key. The value input as a decimal number is converted into a value indicating a month, and the value input subsequently is indicated as a day. Processing as a date input format for processing as a value and processing as a number of days input format for processing an input value as the number of days are performed.

If the operator key is input before the input of the [date] key, the processing shifts to step S36 because the processing differs depending on the operator key already input. Then, in step S36, the process branches according to the type of operation being performed at that time.

The operator key already entered is [~]
If, the process proceeds to step S37. Then, processing is performed to determine that the input is the input of the second date in the period calculation. That is, the numerical value at that time is set as a value indicating the month, and the next input is handled as an input indicating the value of the day.

Also, the operator key already input is
If it is [+] or [-], step S38
The processing shifts to. Then, since the date calculation is performed, the input number is converted to the number of days.

On the other hand, if the operator key has not been input in step S35, since the date has been input, the process proceeds to step S37. That is, the numerical value at that time is set as a value indicating the month, and the next input is handled as an input indicating the value of the day.

(Fourth Embodiment) Hereinafter, an example of a fourth embodiment which is a reference of the present invention will be described.

The present embodiment is a method in which the result of the number of days operation is subjected to a memory operation in the memory 23 or a total operation is performed in the GT memory 24. Therefore, each of the memories 23 and 24
As the value stored in, a configuration that uses a decimal number, a configuration that uses days, and a configuration that does not distinguish between days and decimal numbers are possible. Furthermore, a configuration in which the dates are stored in the memories 23 and 24 is possible.

When the date can be stored in the memory 23 and the GT memory 24, the memories 23, 24
And if one of the values calculated with respect to the values in the memories 23 and 24 is a date, the date calculation is performed.
It is possible to adopt a configuration in which the date as the operation result is stored in the memories 23 and 24 (however, an error occurs when the operation is performed between the dates).

However, here, the memory 23 and the GT
The value stored in the memory 24 is always a decimal number. Therefore, when adding the number of days obtained by the number of days operation to the value stored in the memories 23 and 24 or subtracting the number of days from the value stored in the memories 23 and 24, the number of days is converted into a decimal number. ing. When the result of the number of days operation is a date, the operation on the memories 23 and 24 is not performed.

FIG. 11 and FIG. 12 are explanatory diagrams showing the flow of display in one example of the days calculation method according to the present embodiment. The relationship between key input and display flow will be described with reference to FIG. Note that the displays in FIGS. 11 and 12 show a case where the number of days calculation is executed by one-sided omission.

FIG. 11 shows the result of the period calculation in the memory 2.
3 illustrates a case in which addition and subtraction are performed on 3.

The display 151 is a display after the key operation of 1, [date], 1, [-], 2, [date], 1, [=].
Indicates that the day was obtained. The display 152 is a display after adding the displayed value to the memory 23, after the [M +] key operation, and "M" indicating that the value in the memory 23 is not 0 is also displayed. I have. In addition, the displayed value is subtracted from the memory 23. This is a display after the key operation of [M−]. Since the value 31 is subtracted from the stored value 31, the value in the memory 23 becomes 0,
The display of "M" has disappeared.

The display 154 indicates that the result of the period calculation is immediately added to the memory 23. 3, [date], 1, [-], 4, [date], 1, [M +
] After the key operation. And display 155
Is 3, [date], 1, 0, [~], 3, [date], 1,
2, the display after the key operation of [M-] is shown, and the calculation result is displayed. The calculation result is the value 3 stored in the memory 23.
It has been subtracted from 1. Therefore, when the value in the memory 23 is displayed by the key operation of [RM],
As shown in the display 156, the value in the memory 23 is 29.

FIG. 12 shows a case where the total result of the period calculation is calculated in the GT memory 24.

A display 157 shows an initial display when the GT switch 5 is turned off. The display 158 is a display after the key operation of 1, [date], 1, [~], 2, [date], 1, [=].
This indicates that the day has been obtained. Since the GT switch 5 is off, no cumulative calculation is performed.

A display 159 shows a display when the GT switch 5 is turned on while the display 158 is displayed. In this state, the cumulative calculation has not been started, and the value of the GT memory 24 is 0. Display 160
Is a display after the key operation of 3, [date], 1, [-], 4, [date], 1, [=], which is a period calculation, and displays 31 days, which is the number of days to be obtained. “G” is displayed in the GT memory 24 to indicate that a value other than 0 is stored.

The GT key 10 is a key for displaying the operation result of the cumulative operation of the GT memory 24.
When the key 10 is operated, as shown in a display 161, the calculation result of the cumulative calculation of the GT memory 24 is displayed.

FIGS. 13 and 14 are flowcharts showing an example of the number of days calculation method according to this embodiment.

FIG. 13 shows a processing method corresponding to the input of the [M +] key. Schematically, the method of adding the processing of converting the number of days into a decimal number and the processing of performing a period calculation are added to the processing of the [M +] key in the four arithmetic operations.

Now, for example, when the key operation is performed by inputting an operator key such as X, [+], X, [M +] (X is a decimal number or a date), [M + ] Key is entered. The processing at this time is performed in step S4
The process shifts from 1 to step S42. In step S42, the process branches based on the flag of Yreg22 (indicating whether it is the target value of the four arithmetic operations or the target value of the daytime operation) and the contents of the operator flag 25.

The operation branches to the four arithmetic operations when the key operation indicates a decimal operation such as 1, [+], 2, [M +], etc. Similarly, after performing the four arithmetic operations in step S43, the memory 23 is executed in step S47.
Add to

Further, the reason for branching to the period calculation is that the key operation is performed following the key operation of the period calculation, for example, date, [-], date, [M +], etc.
] Key is operated. At this time, a period calculation is performed in step S44. And step S
In step 46, the operation result is converted to a decimal number, and
At 47, the calculation result converted to a decimal number is stored in the memory 2
Add to 3.

Further, the reason for branching to the date calculation is that the key operation is performed following the key operation of the date calculation, such as date, [+], number of days, [M +], etc.
] Key is operated. At this time, the operation result is a date, and the memory operation cannot be performed. Therefore, the operation ends without performing any processing.

On the other hand, in step S41, the key operation immediately before that is performed by inputting an operator key such as X, [M +] (where X is a decimal number or a date or a number of days). No, [M +
] Key is input. At this time, if the input value X is a decimal number, an addition process to the memory 23 is performed in step S47.

If the value X is the number of days, step S4
At 6, the number of days is converted to a decimal number, and an addition process to the memory 23 is performed at step S47. However, the value to be displayed is a value indicating the number of days without being converted to a decimal number, and is prepared for a subsequent key input. If the value X is a date, the operation ends without performing any processing.

When [M-] is input, the process of step S47 is only changed from the addition process to the subtraction process, and the description is omitted.

FIG. 14 shows a method of the addition process to the GT memory 24, and shows the details of step S23 in the flowchart of FIG. 8 showing the input process of the [=] key.

That is, when the GT switch 5 is off, the GT memory 24 does not participate. Therefore, the process immediately branches from step S48 to the end.

On the other hand, when the GT switch 5 is on,
The process branches in step S49 according to the type of the value of the operation result. That is, when the operation result is a decimal number, the process proceeds to step S51, and the operation result is added to the GT memory 24. If the calculation result is the number of days,
In step S50, the number of days is converted to a decimal number, and in step S51, the value converted to a decimal number is added to the GT memory 24. However, the calculation result is kept at a value indicating the number of days to prepare for the next processing. When the calculation result is a date, no processing is performed.

(Fifth Embodiment) An example of the fifth embodiment which is a reference of the present invention will be described below.

FIGS. 15 to 17 are explanatory views showing the flow of display in one example of the number of days calculation method according to the present embodiment. The relationship between key input and display flow will be described with reference to FIG. The display in FIGS. 15 to 17 shows a case where the number of days calculation is executed by one-sided omission.

The present embodiment is a method used in the arithmetic operation of days, in which the value input before the operator key or the value input after the operator key is held as a constant, and the arithmetic operation on the held constant is performed. It is. for that reason,
In the period calculation, a method of holding any one of the two types of input dates as a constant is possible, and in the due date calculation, a method of holding the input date or the input number of days as a constant is possible. However, the present embodiment employs a method of treating a date input before the operator key as a constant.

FIG. 15 shows a display flow corresponding to the holding of the constant in the period calculation.

The display 171 is a display after the key operation of 6, [date], 3, 0, [-], and is a display of the first day in the period calculation. In addition, this first day (June 30)
Is stored as a constant. The display 172 is a display after the key operation of 9, date, 1, 3, [=]. The calculation is performed during the period from June 30 to September 13, and the display shows the calculation result. ing. Next, when a key operation of 7, date, 2, 0, [=] is performed, a period calculation from June 30 held as a constant to newly input July 20 is performed, and the calculation is performed. The resulting number of days of 20 days is displayed 173
Is displayed as

FIG. 16 shows a flow of display corresponding to holding of a constant in the due date calculation, and shows a case where a date after the input number of days has been obtained.

The display 174 is a display after the key operation of 6, [date], 3, 0, [+], and is a display of the first date in the due date calculation. In addition, this first day (June 30)
Is stored as a constant. The display 175 is a display after the key operation of 7, 5, [=], in which a date is calculated when 75 days have passed from June 30, and the display shows the calculation result. Next, when the key operation of 2,0, [=] is performed, a due date calculation for obtaining a date after 20 days of the newly input 20 days from June 30 held as a constant is performed. July 20 is the result
The date is displayed as display 176.

FIG. 17 shows a display flow corresponding to the holding of the constants in the due date calculation, and shows a case in which a date is traced back to the input number of days.

The display 177 is a display after the key operation of 9, [date], 1, 3, [-], and is a display of the last day in the due date calculation. In addition, this last day (September 13)
Is stored as a constant. The display 178 is a display after the key operation of 7, 5, [=], in which calculation of a date that is 75 days earlier than September 13 is performed, and indicates a result of the calculation. Next, when a key operation of 2,0, [=] is performed, a due date calculation is performed to find a date which is retroactive to the newly input 20 days from September 13 held as a constant. The result, August 24, is displayed as a display 179.

In the above-described series of flows, in the processing of the [=] key, the state before the processing is preserved without clearing the value of the Yreg 22 and the contents of the operator flag 25 even after the processing of the number of days. Then, when the value and the [=] key are input without inputting the operator key, Yr
This is realized by performing the number of days calculation according to the value of eg22, the calculation method indicated by the operator flag 25, and the value input immediately before the [=] key.

FIG. 18 is a flowchart showing the processing of the embodiment of the present embodiment described above.

This figure specifically shows the processing corresponding to the input of the [=] key, and is basically the same processing as the flow chart shown in FIG.
This is a flowchart showing processing corresponding to constant processing while clarifying the contents of 22 and the operator flag 25.

The flag of Yreg 22 in this embodiment only indicates a decimal number or a date.
It does not indicate the number of days. Therefore, in step S55, branching is performed depending on whether or not the flag of Yreg22 is a date. When the flag of Yreg22 is not a date, the value of Yreg22 is a decimal number, which is an arithmetic operation. Therefore, the processing is performed in step S56.
To perform the same four arithmetic operations as in the prior art.

On the other hand, if the flag of Yreg 22 indicates the date, branching is performed according to the contents of the operator flag 25 (step S57). When the operator flag 25 indicates [〜], the operation is a period calculation, and therefore, the newly input value Xreg21 is referred to. At this time, Xreg2
If the flag of 1 indicates a date other than the date, the period calculation cannot be performed, so that an error process is performed (step S58). On the other hand, when the flag of Xreg21 indicates the date, Yr
A period calculation is performed from the date indicated by eg22 to the date indicated by Xreg21. The calculation result is stored in Xreg 21 (step S59).

When the flag of the Yreg 22 indicates the date and the content of the operator flag 25 is [+] or [-], the date calculation is performed, and the calculation is performed with reference to the value of the Xreg 21. At this time, if the flag of Xreg21 indicates a decimal number, the date calculation cannot be performed. Therefore, the flag of Xreg21 is changed to a flag indicating the number of days (after the [+] key or the [-] key is input, [date]
When entering the key, the number of days is entered, so X
No date is input to reg21) (step S60).

Then, according to the contents of the operator flag 25,
A date on which the number of days of Xreg 21 has elapsed from the date of Yreg 22 or a date obtained by going back the number of days of Xreg 21 from the date of Yreg 22 is calculated. In addition, the calculation result is Xreg
21 (step S61).

Steps S56, S59, S61 described above
After the process of step S62, the process of step S62 is performed. This process is the same as the process of step S23 in FIG.
In the process shown in FIG. 18, the contents of Yreg 22 and operator flag 25 are retained.

(Sixth Embodiment) Hereinafter, an example of the sixth embodiment which is a reference of the present invention will be described.

In this embodiment, without inputting the year,
This is a method of calculating the number of days for a date that straddles the same as in the case where the date does not straddle. Therefore, in the present embodiment, in the case of a period calculation for calculating the number of days from a certain date (date 1) to a certain date (date 2), when date 2 is a date after date 1, the two types of dates are They say that they are the same year. When the date 2 is the same as or before the date 1, the year of the date 2 is determined to be the year following the year of the date 1.

As for the due date calculation, the range of the number of days is 2 to 2 at the time of the double entry calculation from the relationship with the first embodiment.
366, the calculation is performed with the effective range of 1 to 365 days for the dropout, and the range of 0 to 364 for the calculation of the dropout, and when the number of days falls in any other range, it is regarded as an error.

Therefore, the relationship between the dates is uniquely determined.
Further, the range of the number of days obtained by the period calculation is determined. Therefore, the period calculation and the due date calculation give calculation results that do not contradict each other.

In this embodiment, when date 1 and date 2 are the same date, the same year is processed.
Although an embodiment including a process for leap years and a process for negative days is also possible by allowing the input of a day, the present embodiment employs the above-described method for simplifying the process. The details will be described below step by step.

FIG. 19 is an explanatory diagram showing the relationship between the input and the calculation result in an example of the number of days calculation method according to the present embodiment, and shows a case where the execution is performed by one-sided omission.
In the following description, with respect to the two types of dates described in the column of the operation content in FIG. 3, the date described on the left side of the paper is referred to as date 1, and the remaining date is referred to as date 2.

In the calculation of the period from July 21 to July 22,
Since the date 1 is a date before the date 2, the two types of dates are processed as being in the same year, and as shown in the display 181, the operation result is one day.

In the period calculation from July 21 to July 20, since date 2 is a date before date 1, date 2 is processed as the year following date 1, and as shown in display 182, The calculation result is 364 days.

In the period calculation from July 21 to July 21, since the date 1 and the date 2 are the same date, processing is performed as if there is a gap of one year, and as shown in the display 183, the calculation result is 365 days.

In the date calculation, only dates separated within one year can be calculated. Therefore from July 21 3
As the date after 64 days, as shown in the display 184, 7
Month 20 is calculated.

For the date 365 days after July 21, July 21 is calculated, as shown in display 185. The reason is that, in the period calculation, when two dates are the same, there is a gap of one year.

As shown on the display 186, the calculation cannot be performed for the date 366 days after July 21. The reason is that dates that are separated by one year or more are calculated.

As shown on the display 187, the calculation cannot be performed for the date that is 0 days after July 21. The reason is that when two dates are the same in the period calculation, 1
This is because there is a gap between years.

As shown in display 188, July 21 is calculated as the date 364 days before July 20.

As shown in display 189, July 21 is calculated for the date 365 days before July 21. The reason is that in the period calculation, when two types of dates are the same, there is a gap of one year, and this is for consistency with the period calculation.

As shown in the display 190, the calculation cannot be performed for the date 366 days before July 21. The reason is that dates that are separated by one year or more are calculated.

As shown in the display 191, the calculation cannot be performed for the date 0 days before July 21. The reason is that when two dates are the same in the period calculation, 1
This is because there is a gap between years.

In the above calculation, a correction process for determining the year of the date is added to the subroutine for performing the period calculation, and a process for determining the range of days is added to the subroutine for performing the date calculation. Outside, it is realized by error processing.

FIGS. 20 and 21 show flowcharts of processing added for the above calculation as an example of the present embodiment.

FIG. 20 is a flowchart showing the period calculation, and more specifically, a process inserted between steps S3 and S4 in the flowchart shown in FIG.

That is, the sign of the number of days calculated in step S3 is determined (step S65). When the sign of the calculated number of days is a positive sign (excluding 0), since the date 1 and the date 2 are the same year, the number of days for which the calculation result is obtained is set.

On the other hand, when the sign of the calculated number of days is negative or 0, it means that the year of date 2 is the next year after the year of date 1, so the year of date 1 is treated as the next year. 365 days, which is the number of days in one year, is added to the calculated number of days, and the number of days is calculated (step S66).

FIG. 21 is a flowchart showing the due date calculation. Specifically, it is inserted immediately before step S10 in the flowchart shown in FIG. 5 and immediately before step S15 in the flowchart shown in FIG. Processing. In this case, the date to be processed is indicated only by the month value and the day value, such as January 1, and the year is not input.

The processing in steps S7 to S9 shown in FIG. 5 or the processing in step S12 shown in FIG.
When the result of the processing in steps S14 to S14 has a value of 0, if the two types of dates are the same, the processing does not match the processing of setting the number of days to 365 days. In this embodiment, an error is also determined when the result of the above calculation is negative (step S67).

If the calculation result is less than 365 days, the date to be obtained is not a date separated by more than one year. However, if the above calculation result exceeds 365, the date to be obtained is a date separated by more than one year, so that an error occurs (step S6).
8).

(Seventh Embodiment) Hereinafter, an example of the seventh embodiment which is a reference of the present invention will be described.

FIG. 22 is an explanatory diagram showing the relationship between the input and the calculation result in one example of the number of days calculation method according to the present embodiment, and shows the case where the execution is performed by dropping.

In the period calculation from February 29 to March 1, as shown in display 201, the calculation result is one day,
The same number of days as in the period calculation from February 28 to March 1 is obtained.

In the calculation of the period from February 29 to February 28, as shown in display 202, the calculation result is 365
Day.

In the period calculation from February 29 to February 29, if the two types of dates are the same, the calculation result is 3
It is 65 days. However, if the date is February 29, it is four years apart, and as shown in the display 203, an error occurs.

In the calculation of the period from February 28 to February 29, as shown in the display 204, the calculation result is one day, and the calculation does not require any special processing.

In the calculation of the period from March 1 to February 29, as shown in the display 205, the calculation result is 365 days, and the calculation does not require any special processing.

[0200] The date one day has passed since February 29 is March 1, as shown in display 206.

The date when 365 days have passed since February 29 is February 28, as shown in display 207.

The date on which 366 days have passed since February 29 is equivalent to March 1 of the following year and is separated by more than one year, so that an error occurs as shown in display 208.

Further, as shown in the display 209, an error occurs on the date when 0 day has passed since February 29, since the same date is inconsistent with the process of setting the date apart by one year.

The date one day back from February 29 is
Since it is the reverse operation of the period operation from February 28 to February 29, the operation result is, as shown in the display 210, February 2
8 days.

[0205] Further, since the date retroactive to 365 days from February 29 is the reverse of the period calculation from February 29 to March 1, the calculation result is as shown in display 211, One day.

[0206] Further, a date that is 366 days earlier than February 29 is equivalent to February 28 of the previous year and is separated by more than one year, so that an error occurs as shown in display 212.

[0207] Further, the date which is 0 days earlier than February 29 is
Since the same date is inconsistent with the process of separating by one year, an error occurs as shown in the display 213.

As is clear from the above description, in the due date calculation, even if the date is February 29, the number of elapsed days,
Alternatively, the usable range of the number of days to go back is the same as the range enabled in the example of the sixth embodiment,
No special consideration is required for the range of days.

Therefore, the embodiment of the present embodiment may be configured according to the following policy.

That is, in the period calculation from February 29 to a certain date, the same calculation result as the period calculation based on February 28, which is not a leap year, is obtained. Therefore, when February 29 is input as the reference date, this date may be changed to February 28.

In the period calculation from a certain date to February 29, the same calculation result as that of the period calculation until March 1 of a non-leap year is obtained. When the date is converted into the number of days based on a specific date such as January 1, February 29 and March 1 have the same value. For this reason, when performing the period calculation from a certain date to February 29, no special processing is required.

Also, the number of days from February 29 to February 28,
In the period calculation for obtaining the number of days from March 1 to February 29, the period calculation for the number of days from February 29 to February 28 is performed for the period of the number of days from February 28 to February 28. Replaced by arithmetic. However, in the case of this replacement, the same method as that of the example in the sixth embodiment is adopted, and in the case where the two types of dates are the same, the configuration is not limited to a configuration in which the dates are separated by one year. No.

On the other hand, the embodiment is configured by different methods, and when the two types of dates are the same, the method of 0 day is adopted. The period calculation of the number of days cannot be replaced with the period calculation of the number of days from February 28 to February 28. In this case, the period calculation of the number of days from February 29 to February 28 is limited. It is necessary to previously determine the calculation result as 365 days.

In the due date calculation for finding a date after a certain number of days from a certain date, for example, adding one day to February 29 results in February 30, and correcting this to a date according to the calendar results in March. Two days. Therefore, if the date is February 29 in the due date calculation, the table indicating the number of days in February is corrected from 28 to 29. As a result, if the calculation result is February 30, it is corrected to March 1, and a correct date is obtained.

[0215] Further, in the due date calculation that goes back a certain number of days from a certain date, no calculation over February 29 occurs, so that no correction part occurs on February 29.

FIGS. 23 and 24 show flowcharts created from the above policy, and are an example of this embodiment. In the following description, the date input before the operator key is date 1 and the date input after the operator key is date 2.

FIG. 23 is a flowchart showing a processing method of the period calculation.

If the date 1 is February 29, special processing is necessary, and the process shifts from step S71 to step S72. If the date 2 is also February 29, an error occurs. On the other hand, date 2 is February 29
Otherwise, the process proceeds to step S73. In this process, if the date 2 is February 28, the process proceeds to step S
The process proceeds to 75, where a predetermined value of 365 days is obtained as the number of days to be obtained (step S75).

On the other hand, if the date 2 is not February 28 in step S73, the process proceeds to step S74.
Move on to Then, the period calculation based on February 29 is calculated as 2
In order to replace the calculation with the period based on the month 28, the value of the date 1 is set to February 28. Then, after step S
At 78, the number of days is calculated.

The above processing is performed when the date 1 is February 29, and the processing that follows is the processing of step S4 shown in FIG.

If the date 1 is other than February 29, the process proceeds from step S71 to step S76. If the date 2 is February 29, the process moves to step S77 for special processing. Then, it is determined whether or not the date 1 is March 1, and if the date 1 is March 1, the process proceeds to step S75, in which the predetermined number of days 365 is obtained as the number of days to be obtained. .

In step S76, date 2 is 2
If the date is not the 29th of the month, and if the date 1 is not March 1 in step S77, the normal process is performed, and the process proceeds to step S78, where an operation for calculating the number of days is performed. Then, the process of step S4 shown in FIG. 4 is performed.

In the above processing, step S78
Corresponds to the processing of steps S1 to S3 in FIG. Further, similarly to the example of the sixth embodiment, when the date 1 and the date 2 are the same day, if the calculation is performed at intervals of one year, steps S73 and S7 are performed.
6, S77 and S75 can be omitted.

FIG. 24 is a flowchart showing a processing method of a due date calculation for finding a date after a certain number of days has elapsed from a certain date, and is a process performed prior to step S7 shown in FIG.

If the input date is February 29, the process proceeds from step S79 to step S80 to perform leap year correction. And the number of days in February is 2
Correct from 8 to 29 days. That is, the correction corresponding to the leap year is performed as the date correction in step S11 in FIG. If the input date is other than February 29, the process ends without performing any processing.

In the due date calculation for obtaining a date that is a certain number of days before a certain date, no correction is required, and the process may be performed according to the flowchart shown in FIG.

(Eighth Embodiment) An input cancellation method according to the present invention, particularly an embodiment (eighth embodiment) relating to an input cancellation method for a plurality of input items will be described using an example.

In the present embodiment, a combination of required items (for example, year, month, day, or month, day, or hour, minute, second) is selected from among year, month, day, hour, minute, and second items. etc)
In the electronic desk calculator provided with the input format of the value of each item in the above. Therefore, as an example, other embodiments (examples) including the above are included.
Therefore, the input item is composed of two items, month and day. Specifically, this is an input canceling method corresponding to the date input format, and also includes a decimal input canceling method.

FIG. 25 is an explanatory diagram showing a display flow in an example of the input canceling method according to the present embodiment. The relationship between key input and display flow will be described with reference to FIG.

[0230] The display 221 shows the display in the initial state before the value is input, and the display 222 shows the state in which the value 7 is input. Subsequently, when the [Date] key is input, the input state becomes a date input format, and as shown in a display 223, the value 7 input immediately before is converted into a numerical value indicating the month in the date. Also, the symbol "month" is displayed, and serves as a delimiter from the next input value. When the value indicating the day is input, the display is 2
The display shown in FIG. That is, the display 224 shows a state in which each key of 7, [date], 2, 1 has been input.

When the one-digit deletion key 11 is input in this state, the input of the last input value 1 is canceled. Therefore, as shown in the display 225, the display of the symbols “month” and “day” and the display of the value 7 indicating the month are maintained in the original state. Also, of the numerical value 21 indicating the value of the day, the value 1 is deleted, and the numerical value 2 moves to the right. That is, the display returns to the state immediately before the numerical value 1 is input, that is, the state in which the keys 7, 7, and 2 are input. Therefore, the value 2 is the last input data.

In this state, when the one-digit deletion key 11 is input, the input of the last input value 2 is canceled. Therefore, the display is the same as the state in which each key of [7] and [DATE] is input, as shown at 226.

When the one-digit deletion key 11 is input in this state, the input of the last input [date] key is canceled. Therefore, the display becomes equal to the state in which the numerical key of 7 is input, as shown at 227, and the input value 7 returns from the numerical value indicating the month to the value indicating the decimal number.
When the one-digit deletion key 11 is input again in this state,
The input of the value 7 is canceled, and the display returns to the initial display of 221.

[0234] These series of operations are realized by returning to the input state of the month when the number of digits indicating the day becomes 0 when the [Date] key has already been input. FIG.
Is a flowchart showing a process for the above operation, and shows a process when the one-digit delete key 11 is input, which is an example of the present embodiment.

In step S82, one-digit deletion key 1
The process branches depending on whether the input format immediately before the input of 1 is a date input or a decimal input. And when it is a decimal input state,
The processing in step S83 is performed. That is, in order to delete the last input value, the numerical value displayed at the right end is deleted, and the entire displayed numerical value display is shifted by one digit to the right.

On the other hand, if the date is in the input format, the process proceeds from step S82 to step S84. Then, a numerical value indicating the day is determined. If the numerical value indicating the day is not 0, the process proceeds to step S85, and the rightmost numerical value displayed in the date column is deleted. At this time, if a numerical value remains in the day column, the numerical display in the day column is shifted by one digit to the right. When no numerical value remains in the day column, the numerical value in the day column is displayed as 0 (see displays 224 to 226).

In the determination in step S84, if the numerical value indicating the day is 0, the input of the [date] key is canceled, and the display of the symbols "month" and "day" is canceled. In addition, in order to convert the numerical value displayed in the month column to a decimal number, the numerical value displayed in the month column is moved to the right end of the display (see displays 226 and 227).

As described above, this embodiment is realized by adding the processes of steps S84 to S86 to the deletion method known as the prior art.

(Ninth Embodiment) Hereinafter, an example of the ninth embodiment which is a reference of the present invention will be described.

The present embodiment relates to a method for preventing data in a memory holding a certain value from being inadvertently changed. Data held in the memory can be arbitrary data. . In the present embodiment, the data to be held is the tax rate. To enable the value to be set in the tax rate memory, the [tax rate setting] key 8 must be
It is configured to be entered multiple times.

As a method of displaying to the user the number of times the [tax rate setting] key 8 has been input, three "o" are displayed in advance, and every time the [tax rate setting] key 8 is input, the "o" The display is deleted one by one, and when the display of all “o” is deleted, the input tax rate is set in the tax rate memory.

In the tax rate setting mode, a symbol such as “tax rate” is displayed to alert the user that the tax rate has been set. Setting], the tax rate setting mode can be set only when the key 8 is input, and a configuration in which the shift to the tax rate setting mode is further restricted, or a configuration in which the tax rate setting mode is set after setting the number is added. Configuration is possible. However, these configurations are not employed in this embodiment because of the simplicity of the input operation and the degree of data protection.

Hereinafter, examples of the present embodiment will be described in detail.

FIG. 27 is an explanatory diagram showing a display flow in one example of the memory value setting method according to the present embodiment.

[Tax rate setting] When the key 8 is operated, a tax rate setting mode is set. When the tax rate setting mode is set, the display 23 is displayed to indicate that the tax rate setting mode has been set.
As shown in FIG. 1, three symbols “o” are displayed on the left side. On the right side, the value already set in the tax rate memory is displayed.

Next, the number to be set in the tax rate memory is input. Reference numeral 232 indicates a display after the number is input. Next, when the [tax rate setting] key 8 is entered,
As shown in the display 233, only the number of significant digits that can be held by the tax rate memory is left and the digits that cannot be held are deleted. Also, one display of "o" is deleted. Thereafter, every time the [Tax Rate Setting] key 8 is input,
The display of "o" is deleted one by one (displays 233 to 23).
5).

That is, when the [tax rate setting] key 8 is input, first, a tax rate setting mode is set. Then, the input of the number is performed. Next, when the [tax rate setting] key 8 is input three times in succession, all the display of "o" is deleted. Also,
The value of the number of significant digits (value within four digits) of the digits is set in the tax rate memory.

Thereafter, the tax rate memory holds the value set at this time until a new value is set by a similar operation.

In the state where 233 is displayed, that is, in the tax rate setting mode, the number is entered and the first [tax rate setting] key 8 is input,
If, for example, a [+] key is erroneously input as a key other than the [tax rate setting] key 8, the tax rate setting mode is immediately canceled and the display shown in 236 is displayed. In the state where 234 is displayed, if, for example, the [=] key is erroneously input as a key other than the [tax rate setting] key 8, the tax rate setting mode is canceled and the display shown in 236 is displayed. That is, careless change of the contents of the tax rate memory is prevented.

FIG. 28 is a flowchart showing a process for realizing the above operation in the embodiment of the present embodiment, and is a flowchart of a process corresponding to the input of the [tax rate setting] key 8.

Although it is possible to provide a dedicated flag for identifying whether or not the mode is the tax rate setting mode, in this embodiment, when the tax rate setting mode ends, the value of the tax rate setting counter becomes 0. To reduce the memory area.

When the [tax rate setting] key 8 is input, the process proceeds to step S91, and the value of the tax rate setting counter is determined. The value of the tax rate setting counter is 0 in modes other than the tax rate setting mode. Therefore, when the value of the tax rate setting counter is 0, it is determined that the tax rate setting mode has started. Then, a value 3 indicating the number of inputs of the [tax rate setting] key 8 is set in the tax rate setting counter (step S92).

In step S91, when the value of the tax rate setting counter is 3, after the input of the number,
It is determined that this is the first input of the [tax rate setting] key 8.
For this reason, the number of digits is changed to a value within 4 digits (step S93). Next, the value of the tax rate setting counter is reduced by one (step S95).

When the value of the tax rate setting counter is 2 in step S91, after the input of the number,
It is determined that the input is the second [tax rate setting] key 8 input.
At this time, since the number of digits of the numeral has already been changed to a value within four digits, only the process of reducing the value of the tax rate setting counter by one is performed (step S95).

In step S91, when the value of the tax rate setting counter is 1, after the input of the number,
It is determined that the input is the third [tax rate setting] key 8 input.
At this time, the displayed value (value changed to a value within four digits) is set in the tax rate memory (step S9).
4). Then, the value of the tax rate setting counter is reduced by one (step S95). As a result, the value of the tax rate setting counter becomes 0, and the tax rate setting mode is released.

In the above processing, the processing for displaying “o” shown in FIG. 27 is omitted.

Further, a configuration in which the following processing is added to the above configuration is possible. That is, at the time of inputting a numeric value, when a key other than keys for inputting numerical values (numerical key, decimal point key) is input, the value of the tax rate setting counter is set to 0. After the input of the number is completed, if there is a key input other than the input of the [tax rate setting] key 8, the value of the tax rate setting counter is set to 0. By adding this processing, the erroneous setting prevention rate becomes higher.

When a key for the numeral is input, a process for setting the value of the tax rate setting counter to 3 is added each time the key is input. When this process is added, it is possible to change the value to be set at any time during the tax rate setting mode. After the change of the set value is completed, it is necessary to input the [tax rate setting] key 8 three times, so that the possibility of setting an incorrect value in the tax rate memory does not increase. That is, operability can be improved without lowering the prevention rate of setting an incorrect value.

Hereinafter, the first to seventh and ninth reference examples of the present invention will be described.
The respective embodiments will be summarized.

The reference day calculation method according to the first embodiment is applied to an electronic desk calculator that performs day calculation. Then, it is specified that the operation is a double entry or a one-sided or two-sided operation. When the two-sided entry is specified, a day operation including two types of dates is performed. In this method, one of the two dates is included in the number of days, and when the crossover is designated, the two types of dates are both excluded from the number of days.
Therefore, according to the designation, it is possible to perform the number of days calculation by an arbitrary calculation method of double entry, single drop or double drop.

The day calculation method according to the second embodiment, which is a reference, is applied to an electronic desk calculator provided with a designation switch for designating three types of rounding methods of the calculation result of the four arithmetic operations. And each of the two-sided, one-sided and two-sided,
Each of the three types of rounding methods is associated one-to-one, and a designation switch is used to designate the number of days calculation for double-sided, the number of days for one-sided, or the number of days for double-sided. Therefore, the switch for specifying round-up, round-off, and round-down operations in the four arithmetic operations and the switch for specifying double-sided, single-sided, and double-sided operations are shared. It has become.

The day calculation method according to the third embodiment is provided with an instruction key for indicating whether the value input by the key is the target value of the four arithmetic operations or the target value of the day operation. The present invention is applied to an electronic desk calculator in which a register for storing an input value is provided with a flag indicating a type of the input value. When a numerical value input without operation of the instruction key is performed, display of the input value in accordance with the four arithmetic operations format and storage of the input value in the register are performed, and the flag indicates that the value is the target value of the four arithmetic operations. When a numerical value is input with the operation of the instruction key, the input value is displayed in accordance with the day calculation format, the input value is stored in the register, and the target value of the day calculation is stored in the flag. Is stored, and when the flag value indicates that the value is a target value of the four arithmetic operations, the four arithmetic operations are performed based on the input value stored in the register, and the flag value is the target value of the day number operation. When this is indicated, the number of days is calculated based on the input value stored in the register.
Therefore, whether to perform the four arithmetic operations or the day arithmetic operation is determined only by whether or not to operate the instruction key, and the determined arithmetic method is clearly shown in the display of the input value. As a result, the four arithmetic operations and the day arithmetic operation can be clearly distinguished and executed without switching the mode.

The reference day calculation method according to the fourth embodiment is applied to an electronic desk calculator that performs a day calculation and a memory operation. Then, when a memory calculation instruction is given, a memory calculation is performed on the calculation result obtained by the day calculation and the value stored in the memory, and the calculation result obtained by the memory calculation is stored in the memory. . Therefore, it is possible to perform a memory operation on the operation result of the day operation.

The reference day calculation method according to the fifth embodiment is applied to an electronic desk calculator that performs day calculation. Then, one of the two types of values input across the operator key input and the operation method indicated by the input operator key are stored, and when a new value is input, a new input is performed. The calculated value and the stored value are calculated according to the stored calculation method. Therefore, the number of days can be calculated only by inputting one of the values.

The reference day calculation method according to the sixth embodiment is applied to an electronic desk calculator that performs day calculation. If date 1 input prior to the operator key input is closer to the beginning of the year than date 2 input after the operator key input, it is determined that date 1 and date 2 are in the same year. , Perform a period operation for calculating the number of days from date 1 to date 2, and if date 2 is closer to the beginning of the year than date 1, the year of date 1 is assumed to be one year earlier than the year of date 2. A period calculation for obtaining the number of days from date 1 to date 2 is performed. In the due date calculation for finding a corresponding date from the input date and the input number of days, when performing a period calculation using the input date and the obtained date, the number of days obtained by the period calculation and the input The calculation is performed so that the number of days coincides. That is, since the range that can be handled is limited to one year, it is possible to maintain the anatomical relationship between the calculation for obtaining the number of days and the calculation for obtaining the date even when the input of the year is omitted.

The day number calculating method according to the seventh embodiment is a method of performing a calculation corresponding to a leap year only when February 29 is input as a date. Therefore, even when the input of the year is omitted, it is possible to handle the leap year.

The reference memory value setting method according to the ninth embodiment is applied to an electronic desk calculator provided with a memory for holding a set value and a setting key for setting an input value in the memory. are doing. Then, when the setting key is continuously input a predetermined number of times, the input value is set in the memory. Therefore, even when the setting of the value in the memory is performed by one key switch, it is possible to prevent the setting value of the memory from being changed carelessly.

[0268]

The input canceling method of the present invention can be applied to a computer provided with a specific input format mode in which an input format for inputting a value for each of a plurality of input items is determined, and particularly to an input canceling operation for a plurality of input items. Applied as a method.

Actually, the mode is switched to the input format mode, a value is input to a desired input item of the input format mode, and when a one-digit deletion key is input at the time of inputting the value, the value is immediately preceding the key. For the input item that was input, delete the display of the numerical value displayed on the right side of the display area of this target input item, and delete the display of the numerical value remaining without being deleted in the target input item on the right. When the number of digits after deletion becomes 0 in this target input item, the input item to be deleted by the one-digit deletion key is input by going back by one in the input order in the input format. Items.

Therefore, by inputting the one-digit deletion key, the cancellation can be traced back to an arbitrary input item.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a flow of display in one example of a day number calculation method according to a first embodiment and a second embodiment which is a reference of the present invention.

FIG. 2 is an explanatory diagram showing a display flow in one example of a day calculation method according to the first embodiment and the second embodiment, which is a reference of the present invention.

FIG. 3 is an explanatory diagram showing a display flow in one example of a day number calculation method according to the first embodiment and the second embodiment, which is a reference of the present invention.

FIG. 4 is a flowchart illustrating an example of a day calculation method according to the first embodiment and the second embodiment, which is a reference of the present invention.

FIG. 5 is a flowchart illustrating an example of a day calculation method according to the first embodiment and the second embodiment, which is a reference of the present invention.

FIG. 6 is a flowchart illustrating an example of a day calculation method according to the first and second embodiments, which is a reference of the present invention.

FIG. 7 is an explanatory diagram showing a flow of display in an example of a days calculation method according to a third embodiment which is a reference of the present invention.

FIG. 8 is a flowchart illustrating an example of a days calculation method according to a third embodiment that is a reference of the present invention.

FIG. 9 is a flowchart illustrating an example of a days calculation method according to a third embodiment, which is a reference of the present invention.

FIG. 10 is a flowchart illustrating an example of a days calculation method according to a third embodiment, which is a reference of the present invention.

FIG. 11 is an explanatory diagram showing a flow of display in an example of a days calculation method according to a fourth embodiment which is a reference of the present invention.

FIG. 12 is an explanatory diagram showing a display flow in one example of a days calculation method according to a fourth embodiment which is a reference of the present invention.

FIG. 13 is a flowchart illustrating an example of a days calculation method according to a fourth embodiment, which is a reference of the present invention.

FIG. 14 is a flowchart illustrating an example of a days calculation method according to a fourth embodiment which is a reference of the present invention.

FIG. 15 is an explanatory diagram showing a display flow in one example of a days calculation method according to a fifth embodiment which is a reference of the present invention.

FIG. 16 is an explanatory diagram showing a flow of display in one example of a days calculation method according to a fifth embodiment which is a reference of the present invention.

FIG. 17 is an explanatory diagram showing a flow of display in one example of a days calculation method according to a fifth embodiment which is a reference of the present invention.

FIG. 18 is a flowchart illustrating an example of a days calculation method according to a fifth embodiment, which is a reference of the present invention.

FIG. 19 is an explanatory diagram showing a relationship between an input value and a calculation result in an example of a day calculation method according to a sixth embodiment which is a reference of the present invention.

FIG. 20 is a flowchart illustrating an example of a days calculation method according to a sixth embodiment that is a reference of the present invention.

FIG. 21 is a flowchart illustrating an example of a days calculation method according to a sixth embodiment that is a reference of the present invention.

FIG. 22 is an explanatory diagram showing a relationship between an input value and a calculation result in an example of a day calculation method according to a seventh embodiment which is a reference of the present invention.

FIG. 23 is a flowchart illustrating an example of a days calculation method according to a seventh embodiment, which is a reference of the present invention.

FIG. 24 is a flowchart illustrating an example of a days calculation method according to a seventh embodiment, which is a reference of the present invention.

FIG. 25 is an explanatory diagram showing a display flow in an example of the input canceling method according to the embodiment (eighth embodiment) of the present invention.

FIG. 26 is a flowchart illustrating an example of an input canceling method according to an embodiment (eighth embodiment) of the present invention.

FIG. 27 is an explanatory diagram showing a display flow in an example of a memory value setting method according to a ninth embodiment which is a reference of the present invention.

FIG. 28 is a flowchart illustrating an example of a memory value setting method according to a ninth embodiment that is a reference of the present invention.

FIG. 29 is a plan view showing the appearance of an electronic desk calculator applied in an example of the first to ninth embodiments.

FIG. 30 is a block diagram showing an electrical configuration of an electronic desk calculator applied in an example of the first to ninth embodiments.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic desk calculator 2 LCD display part 5 GT switch 7 Designation switch 8 [Tax rate setting] key 11 1 digit deletion key 23 Memory 24 GT memory 27 Setting counter

Claims (1)

[Claims] 1. A computer provided with a specific input format mode in which an input format for inputting a value for each of a plurality of input items is determined. The computer is switched to the input format mode and a desired input of the input format mode is performed. Enter a value in the item, and when this value is entered, enter a one-digit delete key. The input item for which the value was entered immediately before is displayed on the right side of the display area of the target input item. The display of the displayed numerical value is deleted, and the display of the numerical value remaining without being deleted in the target input item is shifted by one digit to the right, and the number of digits after the deletion is 0 in the target input item. , The input item to be deleted by the one-digit delete key is traced back by one in the input order in the input format. Input revocation method characterized by, and the input item.