JP2002278944A - Shopping calculation processing method, information processor with shopping calculation function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shopping calculation processing method and an information processor with a shopping calculation function which have a function for performing calculation required at the time of shopping and allow a user to confirm the history of calculation. SOLUTION: When the amount of shopping is inputted from keys 20 for arithmetic calculations, arithmetic calculations are preformed and when a tax addition key 44 is pressed, a payment amount is calculated according to a tax rate which is previously set. When a cash key 41 is pressed, a shopping count is increased by one. When the amount of cash is inputted and a change key 42 is depressed, the amount of change obtained by subtracting the amount of payment amount from the amount of cash is calculated. The amounts of payment, cash and the change and the shopping count are associatively stored. When a →key 48 is depressed in a state where the amount of change is displayed, the amount of payment of the same shopping count is displayed. When the → key 48 is further pressed, the amount of cash is displayed. When a ↑key 46 and a ↓ key 47 are pressed, displayed shopping count is increased/decreased. Then, cash corresponding to shopping count, the amounts of the change and the payment are displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus having a shopping calculation function for calculating a change amount at the time of shopping.

[0002]

2. Description of the Related Art A merchandise sales data processing apparatus described in Japanese Patent Application Laid-Open No. Hei 7-98787 is a cash processing apparatus such as an electronic cash register in a store, which stores the total amount of currency input from a currency input port. As the amount, the deposit amount is compared with the total amount in one transaction, and when the deposit amount is equal to or greater than the total amount, the difference is automatically discharged as a change amount.

[0003] The desk top addition / subtraction / multiplication / division calculator described in Japanese Patent Application Laid-Open No. 11-66012 is a calculator capable of performing a check calculation, and displays input item numbers and total input item numbers on two separate counters in accordance with input numerical values. It is easy to make corrections and recalculations later when recalculating.

[0004]

However, the above-mentioned prior art does not have a function for performing calculations required when a customer makes a purchase.

An object of the present invention is to provide a shopping calculation processing method and an information processing apparatus with a shopping calculation function which have a function of performing necessary calculations at the time of shopping and which can confirm the history of calculations.

[0006]

The present invention has a shopping calculation function having four arithmetic operations means for performing four arithmetic operations, a tax calculation means for performing a tax calculation, a change calculation means for performing a change calculation, and a display means for displaying a calculation result. A shopping calculation processing method for an information processing apparatus, wherein four arithmetic operations means calculates a shopping price based on an input numerical value, display means displays the calculated shopping price, and tax calculation means. Calculating the payment amount from a predetermined tax rate and the shopping amount, the display means displaying the calculated payment amount, and the change calculating means subtracting the payment amount from the input principal. Calculating the change amount, and counting the purchase count, which is the number of times that the shopping count means calculates the payment amount or the principal or change amount. There is a shopping calculation processing method comprising the step of displaying said shopping count and the payment amount or principal or change amount.

[0007] According to the present invention, the four arithmetic operations means calculates the shopping amount based on the input numerical value, and the tax calculation means,
The payment amount is calculated from the predetermined tax rate and the shopping amount, the change calculation means calculates the change amount by subtracting the payment amount from the input principal, and the display means displays the payment amount or the principal or change. Since it displays the shopping count and the payment amount or the principal or change amount which is the number of times to calculate the amount, it has a function to perform the necessary calculations at the time of shopping,
The practicality of the function can be improved.

Further, the present invention provides four arithmetic operations means for calculating a shopping amount based on an input numerical value, tax calculating means for calculating a payment amount from a predetermined tax rate and the shopping amount, and Change calculation means for calculating the change amount by subtracting the payment amount, purchase count means for counting the purchase amount or the number of times to calculate the change amount or the change amount, and the shopping count and the payment amount or the change amount. Or, it is an information processing device with a shopping calculation function comprising display means for displaying a change amount.

According to the present invention, the shopping amount calculated based on the input numerical value, the payment amount calculated from the predetermined tax rate and the shopping amount, and the payment amount are subtracted from the input principal. Display the change amount and the shopping count, which is the number of times the payment amount or the principal or change amount is calculated, so that it has a function of performing necessary calculations at the time of shopping, thereby improving the practicality of the function. be able to.

[0010] Further, the present invention is characterized in that the display means has a notifying means for notifying the user of the type of the displayed amount.

According to the present invention, there is provided a notifying means for notifying the user of the type of the amount of money displayed on the display means.
The user can check the display contents.

Further, in the present invention, the change calculation means includes a principal key for inputting a principal and a change key for calculating change, and the shopping count means is depressed by the principal key. It is characterized in that the shopping count is increased by one every time.

According to the present invention, the shopping count means increments the shopping count by one each time the principal key for inputting the principal is depressed. A shopping count is set.

Further, the present invention is characterized in that the tax calculation means includes a tax-inclusive key for calculating a tax-inclusive amount or a tax-exclusive key for calculating a tax-inclusive amount.

According to the present invention, the tax calculation means includes a tax-inclusive key for calculating the tax-inclusive amount or a tax-exclusive key for calculating the tax-inclusive amount, so that detailed tax calculation can be performed.

Further, the present invention has a count return key, a count advance key, and a display switching key, and the shopping count means decreases the displayed shopping count by one each time the count return key is input, and inputs the count advance key. The display count displays the change amount corresponding to the changed shopping count by one, and the change amount, the principal amount and the payment amount are switched and displayed each time the display switching key is pressed. It is characterized by doing.

According to the present invention, the shopping count to be displayed is decreased by one each time the count return key is input, and the shopping count to be displayed is increased by one each time the count advance key is input, corresponding to the changed shopping count. The change amount is displayed, and each time the display switch key is pressed, the change amount,
Since the principal and the payment amount are switched and displayed, the history of the shopping calculation can be confirmed.

According to the present invention, there is provided a storage means for storing shopping data including a change amount, a principal, a payment amount, and a shopping count, and a data remaining power key for turning on a power while the shopping data is stored in the storage means. When the power is turned on with the data residual power key, the display means displays the change amount corresponding to the shopping count, and switches the change amount, the principal amount and the payment amount every time the display switching key is pressed. The display means is displayed, and the shopping count is decreased by one each time the count return key is input, and is incremented by one each time the count advance key is input. After that, the display means is changed. The switched amount corresponding to the purchased count is displayed.

According to the present invention, there is provided a data residual power key for turning on the power while the shopping data including the change amount, the principal amount, the purchase amount, and the shopping count is stored in the storage means. When turned on, the change amount corresponding to the shopping count is displayed, and each time the display switching key is pressed, the change amount, principal and payment amount are switched and displayed, and the shopping count displayed each time the count return key is input. Is decremented by one, and the shopping count to be displayed each time the count advance key is input is increased by one, and then the switched amount corresponding to the changed shopping count is displayed. You can check the calculation history.

Further, the present invention is characterized in that the shopping count means increments the shopping count by one when the principal key is pressed, regardless of the shopping count displayed by the display means.

According to the present invention, the shopping count is incremented by one when the principal key is pressed, regardless of the shopping count displayed by the display means, so that the shopping calculation history can be accurately stored.

Further, the present invention is characterized in that it has a data erasing power key for erasing all shopping data stored in the storage means and turning on the power.

According to the present invention, since there is a data erasing power key for erasing all the shopping data stored in the storage means and turning on the power, the degree of freedom of the shopping calculation function can be increased.

Further, the present invention is characterized in that when only the four arithmetic operation means operates, the shopping count means does not increase the shopping count.

According to the present invention, when only the four arithmetic operation means operates, the shopping count means does not increase the shopping count, so that the shopping count can be accurately recorded.

According to the present invention, the shopping count is reduced by one by pressing the data remaining power key after the principal key is erroneously pressed, so that the shopping count can be corrected.

According to the present invention, there is further provided a computer comprising: four arithmetic operation means for calculating a shopping amount based on an input numerical value;
Tax calculation means for calculating a payment amount from a predetermined tax rate and the shopping amount, change calculation means for calculating the change amount by subtracting the payment amount from the input principal amount, and the payment amount or the principal amount or change amount And a computer-readable recording medium storing a program that functions as display means for displaying the shopping count and the amount of payment or the principal or change amount, which is a count of the number of times of calculation of the purchase count.

According to the present invention, the shopping amount calculated based on the input numerical value, the payment amount calculated from the predetermined tax rate and the shopping amount, and the payment amount are subtracted from the input principal. Since the change amount calculated and the shopping count, which is the number of times each amount is calculated, are displayed, a function for performing necessary calculations at the time of shopping is provided, and the practicability of the function can be improved.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing the appearance of an information processing apparatus with a shopping calculation function according to an embodiment of the present invention. In the present embodiment, the electronic desk calculator will be described as an example of an information processing device with a shopping calculation function, but may be applied to information processing devices such as a pocket computer, a portable information tool, and an electronic memo.

The electronic desk calculator 1 includes a display panel 2, a solar cell panel 3, and a keyboard 4. The display panel 2 is realized by, for example, an LCD (Liquid Crystal Display), and is a display unit that displays the calculation results of the four arithmetic operations, the purchase amount, the principal, the change amount, the purchase count, the display symbol 43, and the like. The shopping amount, principal, change amount, and shopping count are shopping data calculated by key operations described later. The display symbol 43 “●” is a notifying means for notifying the user of the display of the amount of money currently displayed on the display panel 2. When the principal is displayed, it is described in advance in the upper part of the display panel 2. If "●" is lit below the word "principal" and the change amount is displayed, "●" is lit below the character "change" and if the shopping amount is displayed , “●” is lit below the letters “Total Shopping”. When the shopping price is the tax-included amount, the character “tax included” is lit, and when the shopping price is the tax-excluded amount, the character “tax-excluded” is lit. The solar cell panel 3 supplies power to each circuit inside the electronic desk calculator 1, a built-in battery, and the like. The keyboard 4 is a numeric key for entering numeric values from 0 to 9,
Decimal point key “•” for setting the decimal point, addition key “+” for performing the four arithmetic calculations, subtraction key “-”, multiplication key “×”, division key “÷”, equal to obtain the calculation result A key 40 for calculating four arithmetic operations including a key "=", a sign change key "+/-", a percent key "%", a "principal" key 41 for calculating a change, a "change" key 42,
"Tax Included" key 44 and "tax excluded" key 4 for calculating tax
5. "↑" key 46 for viewing the history of calculation results,
"↓" key 47, "→" key 48, clear key "CC"
E "49, and a shopping calculation key including an all clear key" CA "50. The details of each key operation will be described later.

FIG. 2 is a block diagram showing an electrical configuration of the electronic desk calculator 1. The electronic desk calculator 1 has a CPU
(Central Processing Unit) 11, ROM (Read Only Memory) 12, and RAM (Random Access Memory) 1
And performs processing in response to an input from a keyboard 4 provided with each key, and outputs a processing result to the display panel 2. C
The PU 11 comprehensively controls the operation of the entire computer according to a control program stored in a ROM 12 realized by mask chrome, flash ROM and the like. For example,
It controls reading processing of various keys, arithmetic processing, and output processing of various calculation results. Therefore, a control program for these processes is stored in the ROM 12.
The RAM 13 is used for temporarily storing various data including shopping data. When the power is turned off, the shopping data is stored and stored in either the ROM 12 or the RAM 13 as the storage means. The CPU 11 has a plurality of terminals, and each terminal is connected to each of the terminals of the keyboard 4 and the display panel 2.

FIG. 3 is a diagram showing the electrodes and wiring of the display panel 2. The display panel 2 includes an electrode and a common signal line H1.
To H4 and segment signal lines a1 to a14, b
1 to b14 and S1, S2, S5 to S7, and common signal lines H1 to H4, and segment signal lines a1 to a14, b1 to b14 and S1, S2, S5 to S7.
7 has a plurality of terminals respectively connected thereto.

Each terminal is connected to each terminal of the CPU 11. The keyboard 4 has a plurality of terminals respectively connected to the various keys described above. Each terminal is CP
It is connected to each terminal of U11. The electrodes of the display panel 2 enter a display state under the control of the CPU 11 based on the input from the keyboard 4. That is, the CPU 11
Has a function of a display driving circuit because it controls the display panel to display the calculated result on the display panel.
Further, the CPU 11 has a function of a calculation circuit.

The operation of each key of the keyboard 4 and the operation of the internal circuit will be described. The four-calculation means is composed of the four-calculation key 40, the CPU 11, the ROM 12, and the RAM 13, and performs normal four-calculation including calculation of the purchase amount. Specifically, when a numerical value is input using the numeric key of the four arithmetic calculation keys 40, the input numerical value is temporarily stored in the RAM 13 which is a storage circuit, and the addition, subtraction, multiplication, and division keys are used. When a calculation is designated by inputting one of them, the CPU 11 performs the designated calculation based on the inputted numerical value. The calculation result is stored in the shopping amount storage area of the RAM 13 and is displayed on the display panel 2, and the display symbol 43 is illuminated below "total shopping".

The tax calculation means includes the tax included key 44 and the tax excluded key 4
5. Comprised of a CPU 11, a ROM 12, and a RAM 13, and calculates a payment amount at the time of shopping calculation. Specifically, when the tax-included key 44 or the tax-excluded key 45 is input after the calculation of the shopping amount, the CPU 11 determines the payment amount including the tax-inclusive amount or the tax based on the predetermined tax rate and the stored shopping amount. Calculate the amount of money and RAM
Thirteen payment amount storage areas.

The change calculating means comprises a principal key 41, a change key 42, a CPU 11, a ROM 12, and a RAM 13, and calculates a change amount at the time of calculating a shopping. Specifically, when a numerical value is input following the input of the principal key 41,
The numerical value is stored in the principal storage area of the RAM 13. When the change key 42, which is a change key, is input, a change amount is calculated by subtracting the payment amount from the principal stored in the RAM 13 and stored in the change amount storage area of the RAM 13. Also, a CPU which is a shopping counting means
11, the ROM 12, and the RAM 13 operate as follows when the principal key 41 is input. When the principal key 41 is input, the CPU 11 increases the shopping count (integer value) stored in the RAM 13 by one and also increases the displayed shopping count by one. Note that the shopping count is the number of times each amount has been calculated, and the shopping amount, the payment amount, and the change amount are RA associated with the shopping count.
It is stored in M13. The display shopping count is a value of the shopping count displayed on the display panel 2, and the display panel 2 refers to this value and displays the amount of money associated therewith. Since the shopping count is increased only when the principal key 41 is entered, the maximum shopping count is incremented by one when the principal key 41 is entered, regardless of the value of the displayed shopping count when displaying the shopping history described later. .

The display of the shopping history will be described. When the change amount is calculated, if the display switch key “→” key 48 is input, the shopping amount and the payment amount corresponding to the same shopping count are displayed in order. At the same time as the amount of money is switched, the lighting position of the display symbol 43 is also switched according to the type of amount of money.

If the shopping calculation has already been performed a plurality of times,
When the "@" key 46, which is a count return key, is input, the CPU 11 decrements the display shopping count stored in the RAM 13 by one, and uses the amount of the type displayed before the "@" key 46 was input. The amount corresponding to the reduced display shopping count is displayed on the display panel 2. When the "↓" key 47, which is a count feed key, is input, the CPU
Numeral 11 increments the display shopping count stored in the RAM 13 by one, and displays the amount corresponding to the increased display shopping count on the display panel 2 with the amount of the type displayed before the "↓" key 47 was input. .

Power for operating the CPU 11, the ROM 12, the RAM 13, and the drive circuit is supplied from a battery (BATT) built in the electronic desk calculator 1 or a solar cell 3 arranged on the surface. Power is supplied from the battery via a diode (D1) for preventing backflow. Electric power is supplied from the solar cell via the resistor (R1). When the output voltage from the solar cell is high, a diode (D1)
Is in a reverse bias state, and battery consumption can be avoided. When there is sufficient power generation from the solar cell, the light emitting diode (LED) is turned on and a constant voltage is always supplied. A capacitor (C1) for bias is also connected to the power supply circuit.

As described above, the electronic desk calculator 1 of the present invention
Is a RAM that stores shopping data even when the power is turned off
The shopping data can be held by supplying power to the internal battery 12 from the built-in battery or by storing it in a flash memory ROM 13. As a method of turning on the power while the shopping data is held, a case where the power is turned on by inputting a “C · CE” key 49 which is a data remaining power key and a “CA” key 50 which is a data erasing power key are provided. Is input to turn on the power.
When the power is turned on by inputting the "C.CE" key 49, the shopping data stored in the RAM 12 or the ROM 13 is retained, and even after the power is turned off, the shopping history as described above is maintained. You can see.
When the power is turned on by inputting the “CA” key 50, R
The shopping data stored in the AM 12 or the ROM 13 is deleted. Further, the "C.CE" key 49 can reduce the shopping count by one,
This can be corrected when the purchase count is increased by 1 by inputting 1.

The above processing is realized by a program stored in a computer-readable recording medium. In the present invention, as the recording medium, a memory required for processing by the CPU 11 realized by a microcomputer, for example, the ROM 12 itself may be a program medium, or an external storage device (not shown). It may be a program recording medium provided with a program reader and readable by inserting a recording medium into the program reader. In any case, the stored program may be configured to be accessed and executed by the CPU 11, or the program may be read in any case, and the read program may be a program (not shown) of the microcomputer. The program may be downloaded to the recording area and the program may be executed.

It is assumed that this download program is stored in the main unit in advance. Here, the program recording medium is a recording medium configured to be separable from the main body, such as a tape system such as a magnetic tape or a cassette tape, a magnetic disk such as a floppy (registered trademark) disk or a hard disk, or a CD-ROM / MO / MD / DV
D or other optical discs, IC cards (including memory cards) / optical cards, or mask ROMs, EPROMs (Erasable Programmable RO)
M), EEPROM (Electronically Erasable and Pro
It may be a medium that holds a program in a fixed manner, including a semiconductor memory such as a grammable ROM) or a flash ROM.

The display panel 2 in this embodiment is an LCD
The calculation result and the calculation history are displayed by the electrodes and the connection as shown in FIG. The electrode group is arranged in a figure-eight shape, and the combination thereof represents a number from 0 to 9
It is configured to include two rod-shaped electrodes and a circular electrode arranged at the lower right to represent a decimal point. In addition to the above, a substantially circular electrode of a three-digit division symbol arranged at the upper right is included. Each signal line a1 to a14, b1 to b
14, after forming S1 to S7 and H1 to H4 respectively,
By forming display electrodes of each specification, the substrate, segment signal lines a1 to a14, b1 to b14, S1 to S14
7. By configuring the common signal lines H1 to H4 in common, each display device can be manufactured efficiently. This is configured with a minimum number so that an inexpensive 4-bit CPU can be used.

FIG. 4 is a diagram showing an operation example of a shopping calculation process by the electronic desk calculator 1 of the present invention. Note that the shopping counter is a two-digit positive integer, and the shopping counter advances only in the positive direction for any calculation.

(1) When the "CA" key 50 is input, a screen in an all-clear state is displayed. The value part and the counter part are both 0.

(2) When 300 is entered as the number of the first purchase, 300 is displayed in the numerical value part. The counter keeps 0 as it is.

(3) Input the "+" key which is the first operator. (4) When 456 is input as the number of the next shopping item, 456 is displayed in the numerical value part.

(5) When the "=" key is input to obtain the calculation result of the shopping total, the total amount 756 is displayed. In addition, a symbol is displayed in “total shopping”.

(6) When the "principal" key 41 is input, the principal symbol is displayed, and the shopping counter is incremented by one, and "1" is displayed.

(7) When 1000 is entered as the principal amount, 1000 is displayed in the numerical part. The counter holds 1.

(8) When the "change" key 42 is input, the change amount is calculated (1000-756 = 244), and 244 is displayed. In addition, a symbol is displayed on “Fishing”.

(9) If the auto power is off,
The user inputs a "C.CE" key 49 to turn it on. If you enter 1500 as the number for the second purchase, 150
0 is displayed. The counter keeps 1 as it is.

(10) Input the "+" key which is an operator. (11) When 2000 is entered as the number of purchases, 2000 is displayed in the numerical value part.

(12) When the "=" key is pressed in order to obtain the calculation result of the second shopping total, the total price of 3500 is displayed. In addition, a symbol is displayed in “total shopping”.

(13) To calculate the tax-included amount of shopping,
When the "tax included" key 44 is input, 3675 of the tax included is displayed (when the tax rate is set to 5%). Also, "tax included" is displayed.

(14) When the "principal" key 41 is input, the "principal" symbol is displayed, and the counter is incremented by one to display 2.

(15) When 5000 is entered as the number of the "principal", 5000 is displayed in the numerical part.

(16) When the "change" key 42 is input, the change amount is calculated (5000-3675 = 1325) and 1
325 is displayed. Further, a "fishing" symbol is displayed.

(17) When the "$" key 46 is input, 244, which is the change amount of the first purchase, is displayed. The display counter is decremented by 1 and 1 is displayed.

(18) When the “→” key 48 is input, a total amount 756 of the first purchase is displayed. The counter keeps 1 as it is. In addition, a symbol is displayed in “total shopping”.

(19) When the “→” key 48 is further input, 1000, which is the principal of the first purchase, is displayed. Further, a symbol is displayed in “principal”.

(20) When the "→" key 48 is further input, 244, which is the change amount of the first purchase, is displayed.
In addition, a symbol is displayed on “Fishing”.

(21) When the "↓" key 47 is input, 1325 which is the change amount of the second shopping is displayed. The display counter is incremented by 1, and 2 is displayed.

(22) When the "→" key 48 is input, 3675 which is the total amount of the second purchase is displayed. The counter keeps 2 as it is. In addition, a symbol is displayed in “total shopping”.

FIG. 5 is a diagram showing an operation example of the shopping calculation process by the electronic desk calculator 1 of the present invention, similarly to FIG.

(23) For example, when confirming shopping after returning home, the user inputs the "C.CE" key 49 to turn on the power. The calculated number 2 is displayed on the counter,
0 is displayed in the numerical value part.

(24) When the “→” key 48 is input, 1325, which is the change amount of the second shopping, is displayed. In addition, a symbol is displayed on “Fishing”.

(25) When the "@" key 46 is input, 244 which is the change amount of the first purchase is displayed. The display counter is decremented by 1, and 1 is displayed.

(26) Here, when the user goes shopping again and turns on the power with the "C.CE" key 49, the counter, which is the count displayed immediately before, is displayed on the counter. 0 is displayed in the numerical value part.

(27) When 700 is entered as the number of the third purchase, 700 is displayed in the numerical value part. The counter is
I keep 1 as it is.

(28) Input the "+" key as an operator. (29) When 400 is entered as the number of shopping items, 4
00 is displayed.

(30) When the "=" key is pressed to obtain the calculation result of the third shopping total, 1100 of the total price is displayed. In addition, a symbol is displayed in “total shopping”.

(31) When the "principal" key 41 is input, a symbol is displayed in the "principal" and the counter is incremented by 1 to the maximum number of times calculated, and 3 is displayed.

(32) When 2000 is entered as the number of the “principal”, 2000 is displayed in the numerical part. The counter is 3
Is kept.

(33) When the "change" key 42 is input, the change amount is calculated (2000-1100 = 900) and 90
0 is displayed. In addition, a symbol is displayed on “Fishing”.

(34) After the calculator is turned off automatically,
It is turned on again by the “C · CE” key 49. The calculated number 3 is displayed on the counter. 0 is displayed in the numerical value part.

(35) When the "$" key 46 is input, 1325, which is the change amount of the second shopping, is displayed. The display counter is decremented by 1, and 2 is displayed. Change shows symbol.

(36) If the "principal" key 41 is input by mistake, the counter is incremented by 1 and 4 is displayed. (37) When the "C.CE" key 49 is input, the counter is decremented by one and can be corrected.

FIG. 6 shows an operation example of setting the tax rate and confirming the tax rate. (1) When the "CA" key 50 is pressed, a screen in an all-clear state is displayed. Both the numerical part and the counter are 0.

(2) When the "tax included" key 44 is input, the "tax rate" is displayed. (3) When 5 of 5% of tax rate is input, 5 is displayed in a numerical part.

(4) To set the tax rate, enter the "=" key to confirm. (5) When the "CA" key 50 is pressed, an all-clear screen is displayed. Both the numerical part and the counter are 0.

(6) When the "tax-excluded" key 45 is input, 5 indicating the set tax rate of 5% is displayed. In addition, a symbol is displayed for “tax rate”.

FIG. 7 is a flowchart showing a shopping calculation process by the electronic desk calculator 1 of the present invention.

At step s1, it is determined whether the "CA" key 50 has been input. Steps if entered
Proceed to 2 to determine whether a numeric key has been entered.
If a numeric key has been entered, the process proceeds to step s3, where it is determined whether the "tax included" key 44 or the "tax excluded" key 45 has been entered. If it has been entered, the process proceeds to step 6, where the entered numerical value is calculated including tax, the tax-included amount or the tax-excluded amount is displayed, and the process ends. If not, the process proceeds to step s4, where it is determined whether an operator has been input and the four arithmetic calculations have been performed. If not, step s2
Returning to step s5, if it has been performed, the process proceeds to step s5. In step s5, the result of the four arithmetic calculations is displayed, and a symbol is displayed in "total shopping". In step s7, it is determined whether the "tax included" key 44 or the "excl. Tax" key 45 has been input. Proceed to step s9. If not, the process proceeds to step s9, where it is determined whether the "principal" key 41 has been input. If the "principal" key 41 has not been entered, the process returns to step s2, and if it has been entered, the process proceeds to step s10. At step s10, the value of the shopping counter +1 is displayed. Further, the numerical value part is set to 0, and a symbol is displayed on the “principal”. In step s11, it is determined whether or not a numeric key has been input. If it has not been input, the process waits. If it has been input, the process proceeds to step s12. In step s12, the input principal amount is displayed, and the flow advances to step s13.
In step s13, it is determined whether or not the "change" key 42 has been input. If not, the process waits. If the "change" key 42 has been input, the process proceeds to step s14. In step s14, the value of the principal amount-the value of the payment amount (change amount) is displayed, and the flow advances to step s15.

In step s2, if the numeric key has not been entered, the process proceeds to the tax rate setting / confirmation process, and
Proceed to 23. In step 23, it is determined whether or not the "tax included" key 44 has been input. If it has been input, the flow advances to step s24 to enter the tax rate setting mode. Step s25
Then, it is determined whether or not a numerical value of the tax rate has been input. If it has not been input, the process waits, and if it has been input, the process proceeds to step s26. In step s26, the input numerical value is stored in the RAM 13 as a tax rate. In step s27, it is determined whether or not the "=" key has been input. If not, the process waits. If it has, the process proceeds to step s2.
Proceed to 8. In step s28, the tax rate is set and the process ends.

If the "tax included" key 44 has not been entered in step s23, the flow advances to step s29 to determine whether the "tax excluded" key 45 has been entered. If not, the process returns to step s1, and if entered, the set tax rate is displayed and the process ends.

In step s15, it is determined whether or not the "@" key 46 has been input. If the "@" key 46 has been input, it is determined in step s16 whether or not the display counter is 2 or more. If so, proceed to step s20. If the display counter is 2 or more, the process proceeds to step s17 to display the value of the display counter-1 and to display the symbol amount (one of the principal, change amount, and shopping amount) displayed at that time. To step s18,
If the display counter is smaller than 2, the process proceeds to step s20. In step s18, it is determined whether or not the "→" key 48 has been input. If the "→" key 48 has been input, the display is switched to the shopping amount display if the change amount is currently displayed, and the current shopping amount is displayed. If it is displayed, the display is switched to the principal display. If the principal is currently displayed, the display is switched to the change amount display and the process returns to step s18. If the "→" key 48 has not been input, the flow advances to step s20 to determine whether the "↓" key 47 has been input. If the "↓" key 47 has not been input, the flow advances to step s35 to determine whether the "ど う か" key 46 or the "→" key 47 has been input. If it has not been input, the process proceeds to step s31. If it has been input, the process returns to step s15. If the "↓" key 47 is input, it is determined in step s21 whether the display counter and the shopping counter are the same. If they are not the same, the process proceeds to step s22, where the value of the display counter +1 is displayed, the amount of the symbol displayed at that time is displayed, and the process returns to step s15. If they are the same, the process returns to step s18.

In step s31, after one change is calculated, it is determined whether or not a numeric key for the next change calculation is input again. If so, the process proceeds to step s3. If it has not been entered, for example, in order to confirm the shopping after returning home, the "C.CE" key 49
To determine if the power was turned on. If the power is not turned on with the “C · CE” key 49, the process ends, and “CC”
If the power is turned on with the "E" key 49, the process proceeds to step s33.In step s33, it is determined whether or not the input of the "C.CE" key 49 is a correction of the "principal" key 41. If it is a correction, the process proceeds to step s34. , The currently displayed display counter value -1 is displayed, and the numerical value part is set to 0. If not corrected, the flow proceeds to step s15.

The lighting of the symbols on the display panel 2 is performed, for example, by selecting the electrodes shown in FIG. 3 as described below. The symbol under “principal” turns on the common signal H1 and the segment signal S1 and turns them on. In the case of “change amount”, the symbol below the common signal H3 and the segment signal S1.
Is set to HIGH, and is turned on. In the case of “total shopping”, the common signal H4 and the segment signal S1 are set to HIGH to be turned on. The tax-included symbol turns on the common signal H4 and the segment signal S6 at a high level, and the tax-excluded symbol turns the common signal H4 and the segment signal S5 at a high level.
H is turned on, the tax rate symbol is turned on by setting the common signal H1 and the segment signal S2 to HIGH, the-(minus) symbol is turned on by setting the common signal H2 and the segment signal S2 to HIGH, and the E symbol is turned on. The signal H3 and the segment signal S2 are set to HIGH to turn on the light. Since the display of the counter is controlled in the same manner as the display of the numerical part, the common signals are H1 to H4
Then, only the segment signal is a1 dedicated to the counter symbol.
Lighting is performed by a combination of 3, b13, a14, and b14.

[0091]

As described above, according to the present invention, a function for performing necessary calculations at the time of shopping is provided, and the practicality of the function can be improved.

Further, according to the present invention, the user can confirm the display contents. Further, according to the present invention, the shopping count is automatically set without the user inputting the shopping count.

Further, according to the present invention, a detailed tax calculation can be performed. Further, according to the present invention, it is possible to check the history of the shopping calculation.

According to the present invention, the shopping calculation history can be confirmed even if the power is turned off once.

Further, according to the present invention, the shopping calculation history can be accurately stored. According to the present invention, the degree of freedom of the shopping calculation function can be increased.

Further, according to the present invention, the shopping count can be accurately recorded. Further, according to the present invention, the shopping count can be corrected.

[Brief description of the drawings]

FIG. 1 is a plan view showing the appearance of an information processing apparatus with a shopping calculation function according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the electronic desk calculator 1.

FIG. 3 is a diagram showing electrodes and connection lines of the display panel 2.

FIG. 4 is a diagram showing an operation example of a shopping calculation process by the electronic desk calculator 1 of the present invention.

FIG. 5 is a diagram showing an operation example of a shopping calculation process by the electronic desk calculator 1 of the present invention.

FIG. 6 is an operation example of tax rate setting and tax rate confirmation.

FIG. 7 is a flowchart showing a shopping calculation process by the electronic desk calculator 1 of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic desk calculator 2 display panel 3 solar panel 4 keyboard 11 CPU (central processing unit) 12 ROM (read only memory) 13 RAM (random access memory) 40 four arithmetic calculation keys 41 principal key 42 fishing key 43 display symbol 44 Tax-included key 45 Tax-excluded key 46 ↑ key 47 ↓ key 48 → key 49 Clear (C / CE) key 50 All clear (CA) key

Claims (12)

[Claims] 1. A shopping calculation processing method for an information processing apparatus with a shopping calculation function having four arithmetic operations means for performing four arithmetic operations, tax calculation means for performing tax calculation, change calculation means for performing change calculation, and display means for displaying calculation results. Wherein the four arithmetic operations means calculates a shopping amount based on the input numerical value, the display means displays the calculated shopping amount, and the tax calculation means sets a predetermined tax rate and the shopping amount. Calculating the payment amount from the amount, the display means displaying the calculated payment amount, and the change calculation means calculating the change amount by subtracting the payment amount from the input principal. A shopping count means for counting a shopping count which is the number of times to calculate a payment amount or a principal or change amount; and Shopping calculation processing method comprising the step of displaying the amount of money or the principal or change the amount and payment. 2. An arithmetic unit for calculating a shopping amount based on an input numerical value, a tax calculating unit for calculating a payment amount based on a predetermined tax rate and the shopping amount, and the payment amount based on an input principal. Change calculation means for calculating a change amount by subtracting the above, purchase count means for counting a purchase count which is the number of times to calculate the payment amount or the principal or change amount, and the purchase count and the payment amount or the principal or change amount. And a display means for displaying the information. 3. The information processing apparatus with a shopping calculation function according to claim 2, wherein said display means includes a notifying means for notifying a user of a type of a displayed amount of money. 4. The change calculating means includes a principal key for inputting a principal and a change key for calculating change, and the shopping counting means includes a purifier for each time the principal key is pressed. 3. The information processing apparatus with a shopping calculation function according to claim 2, wherein the count is incremented by one. 5. The information with a shopping calculation function according to claim 2, wherein the tax calculation means includes a tax-included key for calculating a tax-inclusive amount or a tax-exclusive key for calculating a tax-excluded amount. Processing equipment. 6. A count return key, a count advance key, and a display switching key, wherein the shopping count means decreases the shopping count displayed by one each time the count return key is input, and each time the count advance key is input. The display count is increased by one, and the display means displays the change amount corresponding to the changed purchase count, and switches and displays the change amount, the principal amount, and the payment amount each time the display switching key is pressed. The information processing apparatus with a shopping function according to claim 2. 7. A storage unit for storing shopping data including a change amount, a principal amount, a payment amount, and a shopping count, and a data remaining power key for turning on a power while storing the shopping data in the storage unit. When the power is turned on with the data residual power key, the display means displays the change amount corresponding to the shopping count, and switches the change amount, the principal and the payment amount each time the display switching key is pressed, The shopping count means decreases the shopping count displayed by each time the count return key is input by one, and increases the shopping count displayed by each input of the count advance key by one. Then, the display means displays the changed shopping count. 7. The information processing apparatus with a shopping function according to claim 6, wherein the switched amount of money corresponding to the number is displayed. 8. The shopping calculation function according to claim 4, wherein the shopping count means increases the shopping count by one when the principal key is pressed, regardless of the shopping count displayed by the display means. Attached information processing device. 9. The information processing apparatus with a shopping calculation function according to claim 7, further comprising a data erasing power key for erasing all shopping data stored in said storage means and turning on the power. 10. The information processing apparatus with a shopping calculation function according to claim 2, wherein the shopping counting means does not increase the shopping count when only the four arithmetic operations means operate. 11. The information processing apparatus with a shopping function according to claim 7, wherein the shopping count means decreases the shopping count by one by pressing the data remaining power key after the principal key is pressed. apparatus. 12. A computer, comprising: four arithmetic operation means for calculating a purchase amount based on the input numerical value; tax calculation means for calculating a payment amount based on a predetermined tax rate and said purchase amount; Change calculation means for calculating the change amount by subtracting the payment amount; shopping count means for counting the purchase amount or the number of times of calculating the change amount or the change amount; and the shopping count and the change amount or the change amount. Alternatively, a computer-readable recording medium storing a program that functions as a display unit that displays the change amount.