SU1569815A1 - Multichannel device for information input - Google Patents

Abstract

The invention relates to computing and can be used in information transfer devices. The aim of the invention is to increase the reliability of the input information. The device contains in each channel a clock trigger 1 and information trigger 2, common to all channels, a decoder 6, a multiplexer 3 and a multiplexer 4, as well as shapers 7 pulses. The essence of the technical solution lies in the fact that in each input channel information is recorded only under the condition of arrival of an accompanying clock pulse, which cocks the clock trigger of the channel, which in turn synchronizes the operation of the information trigger. The output of the clock trigger characterizes the signal "Request", a high level (log. "1") which indicates the receipt of information. The polled channel number is used to switch the values of the corresponding clock and information triggers at the device output. In the presence of a "Request" signal, it is concluded that new information has entered the device and the need for its further processing. During the transition to the processing (polling) of the next channel, the triggers of the previous polled information receiving channel are reset, which ensures its readiness to receive new information. 3 il.

Description

The invention relates to computing and can be used to enter information into a computer.

The purpose of the invention is to increase the reliability of the input information.

FIG. 1 shows a block diagram of the device; in fig. 2 - time diagrams of the input signal of the information receiving channel; in fig. 3 is a block diagram of the control unit.

The device contains in each channel the first 1 and second-2 triggers, the first 3 and second 4 multiplexers, as well as the control unit 5, the decoder 6, and the pulse shaper 7. The control unit 5 contains the generator 8 pulses, the counter 9.

Before starting work, the initial installation of all the triggers is done. The circuit of the initial installation is not shown. The input signals of each channel consist of information and accompanying clock pulses.

The device works as follows.

By the difference of 0-1 of the accompanying clock pulse, the first trigger 1 of this channel is set to the Log state. 1. The trigger output on the synchronous input controls the second trigger 2 of the same channel. By a difference of 0-1 at the output of the first trigger 1, the second trigger 2 is set to the state of the input information signal, i.e. The information value of this input channel is recorded. By the address of the interrogated channel, multiplexers 3 and 4 make the commutation of values with

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corresponding triggers 1 and 2 to the outputs of the device. The presence of a request signal (the first trigger I is triggered) over this channel is information that requires processing. The selection of information is performed on the information output of the device in accordance with the output of the channel number of the device.

When switching to polling a new information receiving channel, 1 appears at the corresponding output of the decoder, exciting corresponding shaper 7 of a pulse.

Claims (1)

Invention Formula A multi-channel information input device containing a control unit and in each channel the first and second triggers, the sync inputs of the first triggers, are the first group of device inputs, different from the fact that, in order to increase the reliability of the entered information, the first and second multiplexers and a decoder are entered into it and in each channel a pulse shaper, the outputs of the control unit are connected to the decoder inputs, the control inputs of the first and second multiplexers and are the output of the device channel number, the output n the first- multiplexer is a data output device, 51 and the output of the second multiplexer is the output of the device request, the outputs of the decoder are connected to the inputs of the pulse shapers, and the output of each pulse shaper is connected to the reset inputs of the first and second triggers of the corresponding channel, the information inputs of the second trigger 566915 " The ditch is the second group of device inputs, the outputs of the first triggers are connected to the second triggers and to the information inputs of the second multiplexer, and the outputs of the second triggers are connected to the corresponding information inputs of the first multiplexer. and insch1-I I I- S t, "h P P P P P G FIG. 2 AT Compiled by A. Zhenin Editor L. Zaitseva Tehred M. Didyk Proofreader M. Pojo Order 1449 Circulation 574 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 .. Nonola number FIG. Subscription