SU1367008A1 - Information-input and indicating device - Google Patents

Abstract

The invention relates to automation and computer technology and can be used in devices for keyboard input and display of information, dp, computer applications, desktop and pocket calculators, various control panels. The aim of the invention is to expand the scope by increasing the amount of information displayed and simplifying the device. The device contains an interfacing unit 1, a pulse generator 2, a counter 3, a fixed memory block 4, a block of 5 elements And, a block of 6 RAM, a keyboard 7., a decoder 8, a block 9 of display. The possibility of increasing the number of indicators in block 9 is due to the fact that the dynamic indication method is implemented, in which the luminosity of the indicator does not depend on the number of indicators. This simplifies the entire device and increases the number of keys in the keyboard 7. 2 Il. with

Description

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The invention relates to automation and computing and can be used in devices for keyboard input and display of information for use in computers, desk and pocket calculators, various control and display consoles for automated control systems.

The aim of the invention is to expand the scope by increasing the amount of information displayed and simplifying the device.

Figo shows a block diagram of the proposed device; Fig, 2 is a block diagram of the algorithm for entering information "

The device for inputting information and ICscoding contains a block L of the constant memory, permission is given from the first control output of the interface 1, the character codes O to K are alternately generated at the outputs of block 4, where K is equal to the number of characters in the alphabet of the device Dp of seven-segment indicators 20 K / 10. At the same time, the symbol number from the outputs of counter 3 goes to the first address inputs of all blocks 6 that are in reading mode. A number containing units in those g rows appears in their outputs indie must Irova be current character. This number goes to the display unit 9 and a symbol is flashed on the corresponding indicators, the code of which is issued from the block

nor (for example, RC 580 IC55), a permanent memory generator 2. In this mode, 2 pulses J counter 3; block 4 of fixed memory, block 5 of elements I, blocks 6 of RAM, keyboard

7j deisfrator 8, display unit 9. I

Input device and display

It works in two modes: in the mode of entering information from the keyboard and displaying data previously recorded in blocks 6 of the RAM, in the mode of writing data in blocks 6 of the RAM

The information in blocks 6 is written as follows.

Each indicator from block 9 in block 6 of RAM has one bit allocated. If iM address contains 1 in this bit, it means that i-th character should be entered to this indicator of block 9. For example, if the third address in, 5th bit recorded 1, the 5th indicator should display the digit Zo -On the other addresses in this bit will be written zeros

In the first mode, a single signal from the third output of the C2 group of unit 1 is received at the input of the prohibition of units of block 5 of elements AND, then zero signals from all outputs of block 5 are fed to the recording inputs of all blocks b In this case they are in read mode and function as one block of RAM with a word length of 8p bits, where n is the number of blocks 6, pulses from the generator 2 pulses arrive at the counting input of counter 3 and cause a cyclical change of the address at its output. Since at the entrance of the access block

I enter the information from the keyboard 7 (Fig2) „Dp of this computer writes the number N (the number of the interrogated column of the matrix keyboard 25) in the 1 interfacing unit, from group A which this number goes to the inputs of the decoder 8o. control input is fed from the fourth control output of the group

30 2 interfacing blocks 1, the number N appears in the outputs of the decoder 8; the voltage +5 V appears on one of the outputs of the decoder 8, and therefore

2g on one of the columns of the keyboard matrix 7, If one of the keys located in this column is pressed, a number M, other than zero, appears on the inputs of the keyboard 7, and therefore on the inputs B of block 1, match 40. This number will be transferred to the computer, which, taking into account the number of the column, converts it into a character code. Further in this case, the computer () gives zag

45 for at least 10 ms to eliminate the influence of contact bounce and continues to analyze the M number until it changes (keyboard key 7 is released}, After that

50 it is necessary to make a delay again and proceed to polling the next column of the keyboard matrix, and in case it was the last column, go to the first poll,

55 If, when submitting 1 to some column of the matrix of the keyboard 7, none of the keys of this column is pressed, then the computer proceeds to poll the next column.

4 permanent memories were given permission from the first control output of the first mate block, at the outputs of block 4 alternate character codes from O to K, where K is equal to the number of characters in the device alphabet of Dp seven-segment indicators 20 K / 10 "B At the same time, the symbol number from the outputs of counter 3 is fed to the first address inputs of all blocks 6, which are in reading mode. A number appears in their outputs, containing units in the order in which the current symbol should be displayed. This number goes to the display unit 9 and a symbol flashes on the corresponding indicators, the code of which is issued from the display.

  permanent memory. In this mode, information is entered from the keyboard 7 (Fig2) “Dp of this computer writes the number N (the number of the interrogated column of the matrix keyboard 7) into the 1-gate unit, from group A with which this number goes to the decoder inputs 8o. its control input is filed 1 sec. true control group output

2 block 1, at the outputs of the decoder 8, the number N appears in the positional code of the Tooo.

on one of the columns of the keyboard matrix 7, If one of the keys located in this column is pressed, a number M, other than zero, appears on the outputs of the keyboard 7, and consequently, on the inputs B of interface 1. This number will be transferred to the computer, which, taking into account the number of the column, converts it into a character code. Further in this case, the computer () gives zag

at least 10 ms to eliminate the influence of contact bounce and continues to analyze the M number until it changes (keyboard key 7 is released}, After that

it is necessary to make a delay again and proceed to polling the next column of the keyboard matrix, and in case it was the last column, go to the first poll,

If, when submitting 1 to any column of the matrix of the keyboard 7, none of the keys of this column are pressed, then the computer proceeds to poll the next column

To switch to the data recording mode, in the computer memory blocks 6, instead of the control word 1011, writes the word 0100 to the output group C2 of the first I block, Zero is input to the reverse input of the fixed memory 4 and the decoder 8 control input. , therefore, the display unit 9 and the keyboard 7. does not work. On the contrary, zero applied to the prohibition input of units of block 5 of elements AND permits the formation of a signal at the outputs of block 5 of elements AND, and therefore the inputs to the recording of blocks of 6 °. The unit formed at the second output of group C2 of interface 1 is input to the stop counter 3 and translates it into the formula of the invention

A device for inputting information and indications comprising a keyboard, an indication unit, an interface unit, a decoder, a RAM unit, a counter, the first inputs / outputs of the interface unit are the device inputs-outputs, recording entries, readings,

reset, access control unit are respectively the inputs of writing, reading, sbrbsa, accessing the device, the outputs of the device are connected to the inputs of the keyboard, one that, in order to expand the area by increasing the amount of information displayed and the device simpler; a pulse generator has been entered into it,

recording, the computer must have a permanent memory unit, the outputs of which are connected to the information inputs of the display unit, the control inputs of which are connected to the outputs of the RAM, the information inputs of which and the inputs of the decoder are connected to the information outputs of the interface unit the output of the pulse generator is connected to the counting input of the counter, the outputs of which are connected to the address inputs of the fixed memory unit and the first address inputs of the random access memory, the second address inputs of which and the keyboard outputs are connected to the second .input-outputs of the interface unit, the address outputs of which are connected to the installation inputs are counted, write the following data to the interface unit 1: on output group B, the number in the position code of block 6 to which the number is written output group A is the number itself. In the recording mode, the outputs of counter 3 are the same number as the outputs, so the address goes to the address inputs of all RAM blocks 6, but the number supplied from the outputs of block 1 to the information inputs of all blocks 6 writing only in one of them, to the entry entry of which the unit is fed from the output of a block of 5 elements AND ,,

35

Thus, due to the dynamic indication method, in which the luminescence time of one indicator does not depend on their number, an increase in the number of indicators over 16 is possible, and consequently, the information capability of the device increases, and a simplification of the device is achieved.

40

The first, second, third and fourth control outputs of the interface block are connected respectively to the inversion input of the block. the memory, the stop input of the counter, the read / write input of the RAM block, the control input of the decoder.

thirty

35

The first, second, third and fourth control outputs of the interface block are connected respectively to the inversion input of the block. the memory, the stop input of the counter, the read / write input of the RAM block, the control input of the decoder.

FIG. 2

Claims (1)

SUMMARY OF THE INVENTION A device for inputting indication information comprising a keyboard, an indication unit, a pairing unit, a decoder, a random access memory unit, a counter, the first inputs and outputs of the interface unit are the inputs and outputs of the device, recording, reading, resetting, and reversing inputs of the interface unit are respectively inputs write, read, sbrbs, device access, the decoder outputs are connected to the keyboard inputs, on and and, therefore, to the recording inputs of 15 blocks 6 о The unit formed at the second output of group C2 of block 1 pair input to the stop input of counter 3 and puts it into recording mode. By this time, the computer must write to the interface unit 1 the following data: on the group of outputs B, the number in the position code of block 6 into which the number is written; on the group of outputs A, the number ₀ itself. In recording mode, the outputs of counter 3 are the same the number is the same as at the outputs, so the address goes to the address inputs of all the 6 RAM blocks; furthermore, in order to expand the scope by increasing the volume of displayed information and simplifying the device, a pulse generator is introduced into it , a read-only memory block whose outputs are coupled with the information inputs of the display unit, the control inputs of which are connected to the outputs of the memory block, the information inputs of which and the inputs of the decoder are connected to the information outputs of the interface unit, the output of the pulse generator is connected to the counting input of the counter, the outputs of which, however, the number supplied from the outputs of the block t interfaces to the information inputs of all blocks 6 is recorded only in that one, at the input of which a unit has been fed from the output of the block of 5 elements AND Thus, due to the dynamic indication method, in which the luminescence time of one indicator does not depend on their number, it is possible to increase the number of indicators over 16, and therefore, the information ability of the device increases, and the simplification of the device is also achieved ” 30th are connected to the address inputs of the read-only memory block and the first address inputs of the random access memory block, the second address inputs of which and the keyboard outputs are connected to the second inputs and outputs of the interface unit 35, the address outputs of which are connected to the counter installation inputs, the first, second, third and the fourth control outputs of the block of resistance ~ _{40 are} connected respectively to the input of the circulation of the block constant. memory, counter stop input, read / write input of random access memory block, control input of decoder.