JPH01158556A - Device for setting operational mode of electronic calculator - Google Patents

Abstract

PURPOSE:To easily and quickly know a changed operational mode with an operator by printing the changed operational mode to a printing part every time by a mode changing means. CONSTITUTION:A mode changing means 1 changes an operational mode into the operational mode inputted from a mode setting switch 3 according to a decoded operational mode setting command only when the operational mode given in an operational program in advance and an operational mode setting indicating means 6c indicate that the operational mode setting command is not practiced. Thus, the operational mode setting indicating means 6c comes to indicate a condition which the operational mode setting command is practiced. Besides, a mode printing command means 1 makes a printing part 5 print the operational mode changed every time when the operational mode is changed by the mode changing means 1, and an operator can know the changed operational mode easily.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an arithmetic mode setting device for a desktop electronic computer with a program, which is used not only to calculate numerical values and functions but also to reserve television programs.

<Prior art> In general, a desk computer with a program is L (Lear).
n) In the A (Auto) mode, an arithmetic program written in a simple language consisting of alphanumeric characters and functions that is input from the key input unit is stored in the storage unit, and in the A (Auto) mode, the arithmetic program is read out and the arithmetic processing unit It automatically performs calculations and outputs the calculation results to the display or print section. Traditionally, mode setting instructions have been written in the above calculation programs to set or change the calculation mode, such as specifying the number of significant digits, rounding up, rounding down, or rounding off calculation results, and specifying cumulative calculation. It is. After reading this mode setting command, the CPU selects the calculation mode given in advance in the mode setting command or the calculation input from the alphanumeric keys of the key input unit or the dedicated mode setting switch for setting a special calculation mode. Set, change, and set the calculation mode in the mode.
Perform subsequent calculations in the changed calculation mode.

<Problems to be Solved by the Invention> However, the above-mentioned conventional desktop electronic computers are not structured to output the calculation mode set or changed to the printing section etc. when the calculation program is executed. It is not possible to directly know what calculation mode it has been changed to, and it is not possible to directly know what calculation mode it has been changed to. The disadvantage is that the calculation mode, such as the number of digits and rounding down, cannot be determined. In addition, the above-mentioned conventional desktop computer does not have a structure in which the arithmetic mode set by a dedicated mode setting switch is written into the arithmetic program, so the CPU does not read the state of the mode setting switch each time a mode setting command is issued. This method has disadvantages in that processing efficiency is low, and incorrect operation of the mode setting switch directly affects calculations.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to print a mode setting state each time a mode setting command is executed when a desktop electronic computer is executing an arithmetic program, and to notify the operator of the mode setting state. An object of the present invention is to provide an arithmetic mode setting device for a desktop electronic computer that can incorporate an arithmetic mode input from a mode setting switch into an arithmetic program.

Means for Solving the Problems> In order to achieve the above object, the arithmetic mode setting device of the present invention is a desktop electronic computer with a program that includes a key input section, a storage section, a display section of the arithmetic processing section 1, and a printing section. , mode setting command decoding means for decoding a calculation mode setting command input from the key input unit and in the calculation program stored in the storage unit; and a calculation mode setting instruction indicating a state in which the calculation mode setting command is executed. a mode setting switch for setting an arithmetic mode; and a mode setting switch for setting an arithmetic mode; and a mode setting switch for setting an arithmetic mode; mode changing means for changing the calculation mode to a calculation mode that is input from the mode setting switch only when the instruction means indicates that the calculation mode setting command is not being executed; The present invention is characterized by comprising a mode printing command means for causing the printing section to print each time.

Function> When the desktop electronic computer reads out and executes the arithmetic program stored in the storage section, the mode setting instruction decoding means of the arithmetic mode setting device decodes the arithmetic mode setting instruction in the arithmetic program.

The mode changing means switches the mode setting switch only when the calculation mode given in advance in the calculation program or the calculation mode setting instruction means indicates that the calculation mode setting command is not being executed, according to the decoded calculation mode setting command. The calculation mode is changed to the calculation mode inputted from , and thereby the calculation mode setting instruction means comes to indicate the state in which the calculation mode setting instruction has been executed. Therefore, no matter what calculation mode is input from the mode setting switch, the calculation mode will not be changed until the calculation mode setting command appears again in the calculation program. Further, the mode printing command means causes the printing section to print the changed calculation mode each time the calculation mode is changed by the mode changing means, so that the operator can easily know the changed calculation mode. can.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 is a schematic block diagram showing an embodiment of a desktop electronic computer equipped with an arithmetic mode setting device of the present invention, in which l represents a CPU as an arithmetic processing unit that controls the entire computer according to a program and performs arithmetic operations; is a keyboard for inputting alphanumeric characters and functions required for calculations and calculation programs; 3 is a mode setting switch for setting a special dedicated calculation mode; 4 is a screen for displaying data and calculation results input from keyboard 2 above. CRT to display, 5
is a printer that prints the above data and calculation results on recording paper,
Reference numeral 6 denotes a program area 6a for storing the calculation program inputted from the keyboard 2.

A RAM as a storage unit including an arithmetic register 6b for storing data necessary during CPU operation, and a mode setting flag 6c as an arithmetic mode setting instruction means that indicates with 1.0 whether or not an arithmetic mode setting instruction has been executed; 7 is R for storing fixed control and calculation programs and constants.
It's OM.

The above-mentioned keyboard 2 has an I mode in which a calculation program written in a simple language consisting of alphanumeric characters and functions is written in the program area 6a of the RAM 6 to carry out the processing of the computer, and a CPU input mode according to the above-mentioned calculation program that has been read out. A processing mode switch (not shown) is provided for switching to mode A in which calculations are executed.

The CPU 1 includes a mode setting command decoding means for decoding the calculation mode setting command in the calculation program, and a calculation mode set in advance in the calculation program according to the calculation mode setting command decoded by the mode setting command decoding means. When the mode is changed, the calculation mode is changed to the calculation mode input from the mode setting switch 3 or the keyboard 2 only when the mode setting flag 6c is "0", and after the mode change, the calculation mode is changed to the calculation mode input from the mode setting switch 3 or the keyboard 2.
There are provided a mode changing means for setting the mode to "BI" and a mode printing command means for causing the printer 5 to print the calculation mode changed by the mode changing means in a fixed format each time.

FIG. 2 shows an example of the calculation mode written in the calculation program and printed out to the printer 5 via the mode setting command decoding means and the mode printing command means. Each program line in the figure shows the calculation mode that is initialized prior to financial calculation, and the first line is "2".
” specifies the tab.

"↓" indicates the truncation mode, and rA+J indicates the adding+mode, indicating that the calculation result is rounded down to two digits below the decimal point to calculate the cumulative total, and the second line is r365
J indicates the calculation of the number of days in 365-day mode, "lΣ" indicates the cumulative total of the multiplicand, and indicates that the total number of sales etc. is calculated in 365-day mode, and rGTJ on the third line indicates that the grand total, that is, the total sales amount, is calculated. It represents.

The operation of the desktop electronic computer equipped with the arithmetic mode setting device configured as described above will now be described with reference to the flowchart shown in FIG.

Now, when the processing mode switch is switched to A mode and execution of the calculation program is started, the CPU first resets the mode setting flag 6c of the RAM 6 to "0" in step St, and then in step S2, The program stored in the program storage area 6a is read line by line. Then, in step S3, it is determined whether the read line is the last line or not, and if it is determined to be the last line, step S19
If it is determined that the line is not the last line, the process proceeds to step S4. In step S4, the mode setting command decoding means of the CPU determines whether each line of the read calculation program is a calculation mode setting command.
The process proceeds to the mode change process in S8, while if the determination is negative, the process proceeds to step S9, where it is determined whether or not the line is an input wait command.

In the mode changing process, the mode changing means of the CPU changes the arithmetic mode to the arithmetic mode given in advance in the arithmetic program and decoded by the mode setting command decoding means in step S6, and in step S8
While setting the mode setting flag 6c to "BI", the mode printing command means causes the printer 5 to print the changed calculation mode in step S7, and then returns to step S2.

On the other hand, if it is determined in step S9 that it is an input wait command, the process proceeds to a key input loop of steps SIO to S15, and if it is determined otherwise, the process proceeds to step S16 to execute arithmetic processing, and then proceeds to step SI7. In the key input loop, if the CPU determines that there is a key input in step Sll from the input waiting state in step SIO, it determines in step SI2 whether the key input is for setting the calculation mode. If the purpose is to set the calculation mode, the process proceeds to step S+3 to check whether the mode setting flag is "BI", and if it is "BI", it is determined that the mode cannot be changed since it is the second or subsequent mode change, and the process returns to step Sll. If it is "0", it is the first mode change, so it is determined that the mode can be changed, and the process proceeds to step SI4, where the mode change means is used to change the calculation mode based on the above key input, and print out the changed calculation mode and mode in the same manner as described above. The setting flag is set to "1". If the key input is not for setting the calculation mode, the process proceeds to step SI5 to perform input processing such as numeric human horns, and then exits the key input loop and proceeds to step S+7.

Finally, in step SI7, it is determined whether the mode setting flag 6c is "BI", and if "BI", it is no longer possible to change the mode, so step S reads the next program line.
Return to step 2, and if it is “0”, the mode can be changed, so go to step S.
18, the state of the mode setting switch 3 as the remaining mode setting means is read, and the mode changing means sets the calculation mode accordingly, and the mode setting flag 6c is set to "BI" as described above. After the set and mode print command means prints out the calculation mode to the printer 5, the process returns to step S2.

As described above, according to the calculation mode setting device of the present invention, the calculation mode is set by the calculation mode setting instruction in the calculation program to the calculation mode given in advance in the program or the calculation mode given by key input or mode setting switch. Each time a change is made, the changed calculation mode is output to the print section, so unlike conventional methods, the operator can easily and quickly know the changed calculation mode and can better understand the calculation results. reactor. Additionally, once the calculation mode is set or changed as described above, the calculation mode will not be changed regardless of what calculation mode is input from the keyboard or mode setting switch until the calculation mode setting command appears again in the calculation program. Therefore, it is possible to write the calculation mode into the calculation program from the mode setting switch, which was previously impossible, and there is no need to worry about the calculation program going awry due to erroneous operation of the alphanumeric keys or mode setting switch.

Note that the calculation mode setting command in the calculation program of the present invention is not limited to the one for the financial calculation of the embodiment shown in FIG. Furthermore, it goes without saying that the calculation mode setting device of the present invention is applicable not only to desktop electronic computers for numerical and functional calculations, but also to program reservation devices for video tape recorders and menu reservation devices for microwave ovens.

<Effects of the Invention> As is clear from the above description, the calculation mode setting device of the present invention includes a key input section, a storage section, and a calculation processing section.

In a desktop calculator with a program having a display section and a printing section, an operation mode setting command input from the key input section and stored in the storage section is decoded by a mode setting command decoding means, and the decoded mode is set. A calculation mode that is input from the mode setting switch only when the calculation mode given in advance in the calculation program or calculation mode setting instruction means by the mode change means according to the setting command indicates that the writing calculation mode setting command is not being executed. The operation mode is changed each time the operation mode is changed, and the changed operation mode is printed on the printing section by the mode print command means each time, so the operator can easily and quickly know the changed operation mode, and the operator can easily and quickly know the changed operation mode. It is possible to understand the output calculation results better than before, and it is also possible to write the calculation mode into the calculation program from the mode setting switch, and there is no risk of the calculation program going awry due to incorrect operation of the alphanumeric keys or mode setting switch. will not be able to do so.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram showing an embodiment of a desktop computer equipped with the arithmetic mode setting device of the present invention, Fig. 2 is a diagram showing an arithmetic mode setting command printed out on a printer, and Fig. 3 is the above It is a flowchart showing the flow of operation of an electronic computer. 1...CPU, 2...Keyboard, 3...Mode setting switch, 4...CRT. 5...Printer, 6...r(AM) 6a...Program storage area, 6c...Mode setting flag. Patent applicant: Sharp Corporation Agent
Patent attorney Maeda Hao and 2 others 1st LA

Claims (1)

[Claims] (1) A computation program consisting of alphanumeric characters and functions input from the key input section is stored in the storage section, read out as necessary and computed by the arithmetic processing section, and the computation results and key input data are displayed on the display section. In a desktop electronic computer outputting to a printing section, mode setting command decoding means for decoding the calculation mode setting command in the calculation program, calculation mode setting instruction means for indicating the state in which the calculation mode setting command is executed, and calculation mode According to the mode setting switch for setting and the calculation mode setting command decoded by the mode setting command decoding means, the calculation mode is changed to the calculation mode given in advance in the calculation program, and the calculation mode setting instruction means changes to the calculation mode. a mode changing means for changing the calculation mode to the calculation mode input from the mode setting switch only when it indicates that the setting command is not being executed, and a mode changing means for changing the calculation mode to the calculation mode input from the mode setting switch; 1. An arithmetic mode setting device for a desktop electronic computer, characterized in that it is equipped with a mode printing command means for printing.