JPS5897762A - Print type electronic computer - Google Patents

Abstract

PURPOSE:To prevent scale-over and at the same time to always display clearly the fine increment/decrement of a graph, by providing a scale designating means to a print type electronic computer. CONSTITUTION:A keyboard KB includes a scale designation key SCL in addition to numerical keys NK, function keys FK and a graph print designation key G. The graph print maximum value, e.g., 400 is fed with the keys NK and then to a register R1 via a CPU. With a push of the key SCL, three data 0, 200 and 400 are fed to a printer PRT and at the same time the scale of a full scale 400 is displayed by a display DISP. Then 240G, for example, is pushed through the KB, and thus the maximum dot that can be printed after a division by 400, e.g., 60 obtained with multiplication of 100 is transferred to the printer PRT to print a length equivalent to share of 60 dots and then displayed DISP. In such a way, the full scale is freely controlled for each group of the data. Thus the increment/decrement of a graph can be clearly displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic computer with a printing device that has the function of printing input numerical data or calculation result data in the form of a graph on printing paper.

For example, a dot matrix printing device may be used to graph and print 7 dots, or a group of numerical data to be graphed and printed may be stored in a memory, and based on a graph printing command, the numerical values stored in the memory may be printed. So that the maximum value of the data group can be printed in the printing width of the printing paper,
The graduation scale was set appropriately, the unit of l-dot width was calculated, and then a graph was printed based on the data in the memory. However, in the former method, the scale is r
If the value is between aJ and the maximum number of dots F determined by the paper flow, so/, 7, there is a problem that the resolution decreases and changes in data cannot be expressed. On the other hand, in the latter method, it is necessary to store data in memory in advance and determine the maximum value, and there is a problem that the number of data that can be graphed is limited by the capacity of the mesori used.

An object of the present invention is to solve the above-mentioned conventional problems and provide a printing type electronic calculator that can graph and print numerical data without being restricted by the variation range of family data values or the number of data. It is in.

In order to quickly achieve the above object, the printing type electronic computer of the present invention is provided with means for specifying a scale, that is, means for specifying a maximum data value.The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an example of the configuration of a printing type electronic calculator of the present invention, for example, a calculator, where KB is a keyboard.
,9. A scale designation key and a graph print command key are provided to the 7th Ankushim key group FK of El. C.P.
(U is a control unit) The CPU receives the signal KB8 from the keyboard KB and signals from other circuits, and sends various control signals CPRT to each circuit described later.
t A read-only storage device RO that stores a sequence control circuit configured by CD5P, CRI, and CR2゜ and a group of microinstructions that supply control signals to control each circuit.
It can be configured by M.

Yes, control unit) Signal CR1 supplied from CFU
Data is transferred and stored under the control of tCR2 and CR3. Here, register R1 stores the input numerical data from the keyboard KN, register R2 stores the maximum value of the scale when printing the graph, and register R
3 stores the value obtained by converting the value of the data to be graphed into the number of dots when printing the graph.

The arithmetic unit ALU performs arithmetic processing such as addition and subtraction on the data supplied via the pass line BL, and the display device DISP is a display device for visualizing the data sent via the pass line BL, --For example, use a 7-sedament fluorescent display tube. Printing device PR is a printing device that prints data and graph patterns supplied via the pass line BL on printing paper, and in this example, a dot matrix type printing device is used.

Here, the control unit CPU detects signals from the keyboard Kl and the states of other circuits, and controls the control unit C.
The following signals are generated from the PU.

Data on the pass line BL is supplied to the printing device PRT by the signal CPR'r&:, and the printing device @PRT is controlled.

(1!' The data of the pass line BL is supplied to the display device DISP by the CD5P, and the display device DZsp is controlled.

In response to the signal CR/, the data in the register R/ is supplied to the pass line BL4C, and the data on the pass line BL is supplied to the register R/. The signal CR2 supplies the data in the register R2 to the pass line BL, and the data in the pass line BL to the register R2. The signal CR3 supplies the data in the register R3 to the pass line BL, and the data in the pass line BL to the register R3. In response to the signal CALU, the data of the arithmetic unit ALU is supplied to the pass line BL, and the data of the A pass line BL is supplied to the arithmetic unit ALU.

Next, the key operation procedure and the operation of the computer will be explained with reference to FIG. In the following, a case where the maximum value of data to be printed in a graph is set to 4100 and a case where it is set to IO will be explained.

First, when @da00'' is entered using the numeric keys, a key signal is sent to the control unit CPH.
Control signal CRI is sent from the control unit CPU to register R1.
is supplied, and data 1daoo,' is stored in register wing 1. In addition, the display device DI8F has a control habit CDI
P is supplied, 1-data 0a, 0a is the display device DIS.
Displayed on P. The operating state of the first [11] is shown in step 1 of FIG. Note that the operation status of each procedure is similarly shown in the JWJ.

Next, in step 2, when 8CL+-, which constitutes the scale designation means, is pressed, the key signal is transmitted to the control unit C.
The control signal C is sent to the PU and sent from the control unit CPU.
RI and CR2 are sent, and in response to this signal, data ``4100.'' in register R1 is transferred to register 2. Then, three data @O@e''20f:@daOO2 are sent as control signals. The data is sent to the printing device PRT under the control of the CRI and the CRI-te, and printing as shown in the printing example in step 2 is performed by the printing device PRT.

Also, under the control of the control signal CRI and CD8Pf)I, the data 〇〇,' of the register R1 is displayed on the display device DI8F.
When you press and send the key signal KB from the keyboard KB
S control unit) Sent to CPU, control unit)
Control signals CRI e CR2p CR3 are sent from the CPU, and the input numerical data "-go," is divided by the specified maximum value @wooo of the scale of the graph mentioned above.Next, the number of dots that can be printed on the printing paper is divided. The maximum value of , for example, 100, is multiplied by the division result, and the value 63, which is rounded off to the nearest whole number, is stored in register R3.Furthermore, under the control of control signals CPRT and CR3, register R3 Data @631 is transferred to the printing device PRT, and a graph with a length of 63 dots is printed as shown in the printing example of step 3.Hereafter, in step 4Irj, the same control as in step 3 is performed, and the graph shown in FIG. It is possible to obtain a graph printout as shown in the figure.

If this can be specified and the keys are operated as shown in step 7elv9, printing as shown in the printing column in FIG. 1 can be performed using the same control as in steps 1 to 5 described above.

As is clear from the above explanation, according to the present invention, the scale can be specified by the operator of the calculator, etc., so when numerical data is graphed, changes in increase or decrease in the graph can always be expressed in writing, making it easy to use. will improve.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the configuration of the electronic computer of the present invention, and FIG. 2 is a diagram showing an example of the mode of operation thereof. KB...Keyboard, NK-...Numeric keys, FK...
・7 Anonymous opening key, SCL...Graduation scale specification key, G...Graph print specification key, CPU...Control unit, BL...Bath fin, PRT...Printing device, DISP... Display device, R1p R2r R3
...Register, ALU...Arithmetic unit. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] A printing type electronic computer having at least addition, subtraction, multiplication, and division functions and a printing device includes a graduation scale designation means, and input numerical data or operation result data is shaped into a graph according to the graduation scale designated by the graduation scale designation means. A printing type electronic calculator characterized by printing on printed paper.