SU1208547A2 - Information input device - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in control panels, in devices for preparing and transmitting data for computers. The purpose of the invention is to increase the reliability of the device. The purpose of the invention is achieved by introducing the first and second elements of parity and element I. The invention will eliminate the possibility of the appearance at the device output of a code that does not correspond to the code of the closed switching element of the matrix, thereby increasing the reliability of operation of the device. 1 il. ke o 00 ate

Description

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The invention relates to automation and computer technology and can be used in control panels, in data preparation and transmission devices for computers.

The purpose of the invention is to increase the reliability of the device.

The drawing shows the block diagram of the device.

The device contains a matrix of 1 switching elements, a generator of 2 pulses, the first counter 3, the decoder 4, the switch 5, the AND 6 element, the first parity element 7, the information receiver 8, which is derived from the second parity element 9, the second counter 10 comparator 11.

The device works as follows

If no contact matrix 1 is not closed, then from the output of the generator 2 pulses arrive at the inputs of the first, and second counter 3 and the receiver of information 8.

When a switching element is triggered, a signal appears at the switch output that goes to the input of element 6. At the same time, the code at the output of counter 3 corresponds to the code at the output of the second counter 10, then the signals from the outputs of elements 7 and 9 of the parity check arrive at the inputs of the element And 6, the signal from the output of which is fed to the input of the generator 2 and stops it. The output code of the counter 10 is the closed switching element code.

208547

If the codes of y and the outputs of the counters do not match when the switching element of the switching element is operated, then the signals from the outputs of the elements of the parity-control element do not coincide in time, and

the signal from the output of the element And 6 does not enter the input of the generator 2 and does not stop it.

10 After the switching element is opened, the output signal from the switch is removed, which causes the closure of elements 6 and 6.

The present invention makes it possible to eliminate the possibility of the appearance at the device output of a code that does not correspond to the code of the closed switching element of the matrix, 2Q, thereby increasing the reliability of the device operation.

Claims (1)

Invention Formula 25 thirty 35 Device for entering information on the author. St. No. 940149, distinguished by DJ; e with the fact that, in order to increase the reliability of the device, the first and second elements of parity and the element I, the output of which is connected to the input of the pulse generator, are introduced into it, the inputs of the first and second elements of parity are connected to the outputs of the lower bits of the first counter and to the outputs of the second counter, respectively, the outputs of the first and second elements of the parity check and the switch are connected to the inputs of the element I. Device for entering information on the author. St. No. 940149, distinguished by DJ; e with the fact that, in order to increase the reliability of the device, the first and second elements of parity and the element I, the output of which is connected to the input of the pulse generator, are introduced into it, the inputs of the first and second elements of parity are connected to the outputs of the lower bits of the first counter and to the outputs of the second counter, respectively, the outputs of the first and second elements of the parity check and the switch are connected to the inputs of the element I.