JPS61198352A - Electronics - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an electronic device such as a calculator with a printer or a cash register, which has numerical keys, keys for executing four arithmetic operations, and a printing section, and in particular, relates to an electronic device such as a calculator with a printer or a cash register, which has numerical keys, keys for executing four arithmetic operations, and a printing section. The present invention relates to an electronic device having an item count switch that enables printing.

[Prior art]

Conventional 1 For example, in a calculator with a printer, an item count switch as shown in FIG. 1 that specifies printing of the so-called item count value is arranged on the operating section. For example, when the indicating section of this switch is set to the position shown in the figure, Count the number of times the plus key is pressed during addition and subtraction, and when printing the counting results, for example, as shown in Figure 3, the number of times the plus key is pressed is 002.
” is printed.

This means that when performing addition and subtraction and finding the average,
This is an extremely effective function, and by dividing the result of addition and subtraction by the item count value, you can find the average.

However, key operations when dividing the result of addition and subtraction as described above by the item count value are extremely complicated.

〔the purpose〕

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide an electronic device that can calculate and output the average value from the calculation results with a simple operation, thereby improving the operability when calculating the average value. It is about providing.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention.

In FIG. 2, KB is a keyboard, which includes a group of numeric keys NK consisting of keys 0 to 9, an item count switch ISW that instructs to start counting items, and a group of function keys that are a group of operation execution command keys. Place FK etc. respectively.

The item count switch ISW has r
When AVEJ is displayed and the indicator is set at the rAVEJ position, processing for determining the average value according to the present invention is performed as described later, and the determined average value is automatically printed out.

The CPU is a control unit consisting of a microprocessor, etc., and includes a sequence control circuit composed of a clock pulse generation circuit, a delay circuit, a gate circuit, and other logic circuits, a register AR that stores the execution results of calculations, and a printing It is composed of a print register PR that stores data, an item counter IC that stores the number of items, etc., and executes predetermined calculations using a key signal KBS from the keyboard KB as a trigger.

The ROM is a read-only memory in which a control procedure as shown in FIG. 4, for example, to be executed by the control unit (CPU) is stored in advance. PRT (control unit) is a printing device such as a dot matrix printer that receives print data processed by a CPU and stored in a print register PR, and prints the print data on print paper.

Next, an example of key operation in the embodiment shown in FIG. 2 and an example of printed content corresponding to the example of key operation will be described with reference to FIG. 3.

First, in step 3-1 of FIG. 3, the indicator of the item count switch ISW according to the present invention is set to the rAVEJ position as shown in FIG.

Next, in steps 3-2 and 3-3, press the numeric key and the plus key "+" to perform addition as shown in the figure.Next, in step 3-4, press the equal key "=" to add the item count value. and the calculation results are printed, and in addition, the average value of the calculation results according to the present invention is automatically determined and printed out as described later.

Next, the control operation of each part in the key operation shown in steps 3-4 of FIG. 3 will be explained with reference to the flowchart of FIG. 4.

First, in Sl, normal numerical value setting processing and addition/subtraction execution processing are performed.

Next, if it is determined in step S2 that the equal key has been pressed, the process proceeds to step S34, where it is determined whether or not the position of the instruction section of the item count switch ISW is at the roFFJ position, and the item count switch IS
The instruction part of W is "n+", r fi + / -J, rA
If it is at any position on VEJ, the process advances to step 51G and Sll to print the item value.

In step 310, the item count value counted and stored by the item counter IC is transferred to the printing register PR to be converted into a printing form, and in step Sll, the contents of the printing register PR are transferred to the printing device PRT to form the printing paper. to be printed.

Next, in step S4, in order to print the calculation results, the contents of the register AR that stores the calculation results are transferred to the print register PR and converted into a print form, and in the next step S5, the contents of the print register PR are The printing device P
The information is transferred to RT and printed on printing paper.

Next, in step S6, if the position of the instruction section of the item count switch ISW is at the rAVEJ position, the process advances to step S7.

In the next steps S7 to S9, each process according to the present invention is executed. First, in step S7, the calculation result stored in the register AR is divided by the count value of the item counter IC to obtain an average value. The value is stored in the register AR, and in the next step S8, the contents of the register AR are transferred to the print register PR and converted into a print form. Next, in step S9, the contents of the print register PR are transferred to the printing device PRT and printed.

As a result, the printed content becomes, for example, as shown in the print column of step 3-4 in FIG.

In addition, in the embodiment, the case where the average value is calculated in addition and subtraction calculations has been described, but the present invention is not limited to this, and for example, the average value calculation during memory calculation using memory, etc. , the present invention:
A specific switch is provided, and when the switch is pressed, the average value of the calculated values can be automatically calculated and the average value can be printed out.

〔effect〕

As explained above, according to the present invention, the average value of additions and subtractions can be automatically calculated and output depending on the position of the instruction section of the item count switch, so key operations are not required when calculating the average value. This simplifies the process and greatly improves key operation.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an example of an item count switch in a conventional device, Fig. 2 is a block diagram showing an example of a device to which the present invention is applied, and Fig. 3 is an example of key operations according to the present invention and corresponding responses. FIG. 4 is a flowchart showing an example of control processing according to the present invention. KB: Keyboard, ISW: Item count switch, NK: A group of numeric keys, FK: A group of function keys. CPU...control unit, ROM...read-only memory, PRT...printing device. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) A first key capable of inputting a numerical value, a second key capable of instructing the execution of addition and subtraction, a counting means for counting the number of times the second key is operated, and an instruction for the counting means to start counting. and when there is an instruction to start counting by the instruction means, calculate the calculated value based on the numerical value input from the first key and the addition/subtraction execution instruction input from the second key. An electronic device comprising: means for calculating an average value of the calculated values using the count value of the counting means; and means for outputting the calculated value and the average value calculated by the means. 2) In the electronic device according to claim 1, the indicating means has an indicating part, and the counting by the counting means is started by setting the indicating part at a predetermined position. Featured electronic equipment.