SU1008727A1 - Data input device - Google Patents

Abstract

A DEVICE FOR INPUT OF INFORMATION, containing a matrix of switching elements, the horizontal buses of which are connected to the corresponding outputs of the decoder, and the vertical bus connects to the inputs of the first group of multiplexer, whose output is connected to the first input of the block of elements I, a ring counter, the input of which is connected The output of the pulse generator JcoB, and the outputs of the first and second rpyroi, through the block of elements 1, are connected to the bps inputs of the buffer memory, characterized in that, in order to expand the region YriMmbMbNy by increasing the number of There are the input code options, the first and all the permanent memory blocks and the key register are entered into it, the output 1 of which is connected to the inputs of the first group of the first and second blocks of the permanent memory, and the inputs of the second group of the first block of the permanent memory are connected to the outputs the first group of the ring counter, the inputs of the second group of the second | x) th block of the post memory are connected to the outputs of the second group of the ring counter, the outputs of the first block of the permanent memory are connected to the inputs of the decoder, and the outputs of the torso block of the permanent memory are connected with the second group of the multiplexer.

Description

About 00

The invention relates to computing and can be used to enter information into displays, microcomputers and other equipment. A device for inputting information is known. It contains a matrix of switching elements, the horizontal buses of which are connected to the outputs of the first decoder, and the vertical buses to one of the multiplexer inputs connected to a ring counter8, and the inputs of the first decoder are two memory blocks TI, the AND address element, the first OR element, the first valve block, the second OR element, and the counter i. Closest to the proposed by the technical nature of the device is a device for entering information, containing a matrix of switching elements, the horizontal bus which is connected to the outputs of the first decoder, and the vertical bus - with the inputs of the first group of multiplexer, the output of which is connected to the first input of the block of elements And colo the counter, the input of which is connected to the output of the pulse generator, and the outputs of the first and second groups through the block of elements I are connected to the inputs of the block of buffer memory 2, the disadvantages of the known devices STB is the inability to enter various code options through a single matrix of switching elements. The purpose of the invention is to expand the scope of application of the device by increasing the number of options for entering BHC codes. The goal is achieved by the fact that a device for input of information containing a matrix of switching elements, the horizontal buses of which are connected to the corresponding outputs of the decoder, and vertical bus lines to the inputs of the first group of multiplexer And which is connected to the first input of the block of elements And, a ring counter whose input is connected to the output of the pulse generator, and the outputs of the first and second groups through the block of elements And are connected about the inputs of the block of buffer memory, the first and second blocks of permanent memory and the key A smart register, whose codes are connected to the inputs of the first group of the first and second blocks of the fixed memory, and the inputs of the second group of the first block of the fixed memory are connected to the outputs of the first group of the ring counter, are connected to the outputs of the second block The second group of the colpeck counter, the outputs of the first block of the permanent memory are connected to the inputs of the decoder, and the outputs of the second block of the wall memory are connected to the inputs of the second group of the multiplexer. The drawing shows a functional block diagram of a device for entering information. The device contains a matrix of 1 switching elements, a decoder 2, a multiplexer 3, a block of 4 elements I, a ring counter 5, a generator of 6 pulses, a block 7 of buffer memory, the first 8 and second 9 blocks of permanent memory, and a keyed set of code selection selection 1O. The first 8 and second 9 blocks of the fixed memory contain information corresponding to the conversion of the code of the ring counter 5 into the codes necessary for particular variants of the codes. The keypad 10 is designed to select one of the sets of codes (for example, Latin, Russian, uppercase and lowercase letters, official and other characters). The device works as follows. From the pulse generator 6, the counting pulses arrive at the input of the ring counter 5. At the outputs of counter 5, a code is generated that converts the first 8 and second 9 blocks of permanent memory and then via the decoder 2 together with multiplexer 3 polls the switching elements of matrix 1. If it matches A code from the output of the ring counter 5 and the corresponding switching element of the matrix 1 corresponding to it is generated with a write signal hT signal. This signal from the output of multiplexer 3 is fed to the input of block 4. The latter opens, and the selected code is recorded from the ring counter 5 into block 7 of memory. To switch to the next set of codes, for example, to switch from Russian to Latin, from the outputs of the keypad register 10 select the set of codes to the inputs of the first group of the first 8 and second 9 blocks of permanent memory, a code is applied that switches both blocks 8 and 9 to the required correspondence between the codes from the output of the ring counter 5 and

coming through the first block 8 to the inputs of the decoder 2 and through the second block 9 to the multiplexer 3.

The proposed device, in comparison with the known, provides an increase in the reliability in operation, as well as a reduction in the cost and dimensions of the keyboard control device and 3 times the power consumption.

The economic efficiency of the acquisition lies in a sharp (approximately U time) reduction in the total number of elements of the keyboard control device.

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Claims (1)

DEVICE FOR INFORMATION INPUT, containing a matrix of switching elements, the horizontal buses of which are connected to the corresponding outputs of the decoder, and the vertical buses are connected to the inputs of the first group of the multiplexer, the output of which is connected to the first input of the block of elements AND, the ring counter, the input of which (is connected with the output of the pulse generator, and the outputs of the first and second groups through the block of elements C are connected to the inputs of the buffer memory block, which is due to the fact that, in order to expand the area of and of the input code variants, the first and second read-only memory blocks and the key register are entered into it, the outputs of which are connected to the inputs of the first group of the first and second second read-only memory blocks, and the inputs of the second group of the first read-only memory block are connected to the outputs of the first group of the ring counter, the inputs of the second group of the second block of read-only memory are connected to the outputs of the second group of the ring counter, the outputs of the first block of read-only memory are connected to the ί inputs of the decoder, and the outputs ^ of the second block of read-only memory are connected us to inputs of a second multiplexer group. h> 1.