JPS5911940B2 - Program calculation start device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a program operation start device for a calculator or the like.

As shown in Figure 1, conventional calculators capable of calculating programs have program types (
For example, the computer has program content selection keys A to G for selecting program content such as Pythagorean theorem and interest rate calculation, and program calculations are started by pressing the selection keys A to G.

For example, if there is an instruction in the above program that specifies a numerical input standby state (hereinafter referred to as a Halt instruction), the program operation will be temporarily stopped, a numerical value will be input using the numerical key TK, and then the selection key will be pressed again. Therefore, subsequent program operations are executed. Therefore, when program content is selected using key B, if there are many HART commands in the selected program, key B must be pressed repeatedly each time.

This type of calculator has the drawback that the selection keys A to G are located at the upper end of the keyboard, making key operations very inconvenient.

In order to eliminate this inconvenience, a slide switch is added to the keyboard shown in Figure 1, and this slide switch is used to distinguish between manual calculation and program calculation. A method has been proposed in which the calculation start instruction key is used.

However, in this case, it was cumbersome to switch the slide switch each time during program calculation and manual calculation. The present invention has been made to eliminate the above-mentioned drawbacks.

An embodiment of the present invention will be described below with reference to the drawings, and its outline is as follows. 〇Life in program execution◆(p
Executing S command ◆) specifies a special mode, and the key in this mode is used as the program start key.

By doing so, you can start the program with the tray key, which is the easiest to operate, when you stop the program with the HART command. OThis mode should be canceled by an END command or the like.

Note that the initial program start and the start when there is no PS command are performed using other dedicated keys. Now, FIG. 2 is a block diagram of a program calculator implementing the device of the present invention, in which FX is arithmetic command keys such as ×, ÷, +, , =, M+, M-, V, etc., TK is a numeric key, E is an encoder, Bu is a buffer register, D is a decoder, Fi-Fu is a flip-flop for selecting a program register, AR, IBR,
CR...GR is program register A, ~A
7, bl to B7 are program control gate circuits, 01,
02 is an OR gate circuit, C, , C2 are AND gate circuits, FP is a flip-flop for storing PS instructions, SC is a step counter, CO is an arithmetic control unit, and J is a jump circuit.

Selection of the program registers AR-GR is performed using selection keys A-G shown in FIG.

The program is written to the program register AR-GR via FK and TK in the program mode (or learn mode) as in the conventional case.

Here, we will especially explain the execution of the program. Note that the explanation will be divided into two cases.

(a) Calculation key 2F to instruct the start of program calculation.
When using K (when the PS instruction is programmed).

In this case, the program register BR contains the program "PS, H (Hart), CM, l
,×,M+,1,MR,1,÷,=,END" is stored, and by executing this program, V7
Town] I decided to get 71.

In this case, since the up key serves as the program start key while the program is being executed, interrupt calculations (that is, calculations in which calculation results are input as data) are impossible. Key operations and displays are as follows.

The operation is as follows.

When program designation and program start key B are pressed, micro order 8 is generated and flip-flop F is pressed.
2 is set.

Thereby, AND gates A2, b2 are opened and the program register BR is set to the executable state. P
The S command is output via the buffer Bu. This is control part C. is supplied to generate micro orders. The flip-flop FP is thereby set. The program is stopped at the next Halt command, and the first
When the date key is pressed after inputting the data a, the step counter 1 is counted up via the AND gate C2. Program register BR is step counter SC
Shift to the right in sync with. Unless there is a HaIt command, the step counter is incremented by the S signal in order to move to the next step after completing the program for each step. By pressing the cause key (program progress key), programs CM, 1, X, M+ are executed successively.

After inputting the second data b, by pressing the country key,
Execute +,1,MR,1,÷,1 and end the program. At this time, interrupt calculation with the cause key (operation instruction key 0r program progress key) is not possible, so the FP
The signal controls the jersey circuit J, and normal arithmetic control using the country key is prohibited.

In other words, the country key only serves as a program progression key (
Ha! Note that the flip-flop FP is a micro-order [F] generated by the END instruction of the program.
It will be reset.

b) When starting program calculation using program content selection keys A to G.

(When no PS instruction is programmed). Program register AR has V7] stone word 7? The program “H” that obtains
,CM,l,X,M+,1,H,X,M+,1,MR,
1,÷,=,END" is stored.

Note that interrupt calculation is possible because the ↓ key is not used as a start key.

Key operations and displays are as follows.

The operation is as follows.

When the program designation and program start key A is pressed, the flip-flop F1 is first set.

AND gates Al and bl are opened and program register AR is set to an executable state. Since there is no PS instruction in the program register AR now, the flip-flop FP maintains the reset state. (HaIt state) 1st
When the program execution key A is pressed after inputting data a, the step counter is counted up via OR gate 01, AND gate C1, and OR gate 02, and CM, l, X, M+, 1 is executed. An intermediate result A2 is obtained. Next, by pressing the arithmetic command key after inputting the second data B, the multiplication key, and the third data C, an interrupt arithmetic operation is executed and b-c is obtained. This two-time program state is the HaIt state. Also, since the day key pressed to perform the above multiplication is a set on the flip-flop FP, it is directly transmitted to the CO.

Next, when the prisoner key is pressed, the step counter 1 counts up and the next instruction X is executed.
,MR,1,÷,=, to run the program,
Calculation result V7 Wagetko Tτ "A) 5 is obtained. (Program calculation complete) When there is a PS command, start the program with the calculation command key (country key), and when there is no PS command, use the dedicated keys (A-G) There is no problem in starting the program with .

The PS command is set by a key on the keyboard. As described above, the program operation start device of the present invention can determine whether or not to use the operation instruction key as the program start key depending on whether or not the PS command is written in the specified program. The most efficient key operation can be performed depending on the type, and there is no need to go through the trouble of switching the switch to use the calculation instruction key as the program start key or the original calculation instruction key as in the past. It has the advantage of being able to perform operations smoothly.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a keyboard of a program calculator, and FIG. 2 is a block diagram of an embodiment of the present invention.

Claims (1)

[Claims] 1. In a calculator having numeric keys, calculation instruction keys, and a program register, means for storing in the program register an instruction indicating whether or not to add a program start instruction function to the calculation instruction keys in the HART state during program execution; A program calculation start device comprising: control means for successively executing program calculations in response to the operation of the calculation instruction key to which a start instruction function is added.