SU674011A1 - Information input arrangement - Google Patents

Description

one

The invention relates to the field of computing technology and can be used in devices for synchronous start-up and input of information into multi-channel computing devices.

A device for entering information is known. magosh, containing a keyboard, all of which are connected to the inputs of the computing device, a synchronization unit,

the first in the second outputs of which are connected to the inputs of the unit of formation of a single pulse, the elements of OR SCH,

A disadvantage of this device in the case of its use in multichannel systems with non-simultaneous input of signals into different channels is the lack of simultaneous input of information into a multichannel system.

 The closest technical solution to this invention is a device for entering information, containing in each channel a synchronization unit, the first output of which is connected to the second input of a single

signal And with the first input of the first element And, the output of the co o is connected to the catenary input of the counter, and the second output - to the first input of the former single signal and the first inputs of the second element And, the keyboard, the outputs of which noi key to the First inputs of the computing unit and to the inputs of OR, the output of which is connected to the third and, through NOT, to the fourth input of a single signal generator, the output of which is connected to the second input of the counter, the majority element whose output is connected to the third input of the counter and the second vhbdom you numeral block 2.1.

A disadvantage of this device is low reliability, since:

- any malfunction in one channel of the device, for example, malfunction of at least one of the triggers, causes It to out of sync one of the channels of the multichannel device, because, depending on the type of malfunction, the device is either unable to generate an active signal or starts a series of output signals; - any interference, under the influence of which any trigger fails, leads to a false triggering of the device, as a result of which it generates an erroneous output signal leading to the out-of-synchronization of one of the channels of the multi-channel system. The purpose of the proposed technical solution is to increase the reliability of the device. The goal is achieved by introducing a trigger trigger, a delay element and a receive trigger, the single input of which is connected to the output of the driver, a single signal, the single output is connected to the second input of the first element, and the first input is connected to the output of the second element. And, the second input of which is connected to the single output of the trigger nycKai and the input of the majority element, whose partition is connected to the second input of the reception trigger and through the delay element to the first input of the trigger trigger, the second input of which dklyuchen schetchkka to the exit. , . The block diagram of the device shown in the drawing. The device for entering information contains a synchronization unit 1, the first element AND 2, the reception trigger 3, the counter 4 trigger start 5, the second element AND 6, the primary element 7, the delay element 8, the numeral unit 9, the keyboard 10, the element OR 11, the element NOT-12, single-signal shaper 13, a write trigger 14, a lock trigger 15, a third element AND 16, a fourth element AND a 17 l fifth element, J 1.8, are included in the Kefbpbro UFD. The device works in the following way. V Before starting operation, trigger trigger 3, trigger trigger 5, trigger trigger 14, lock trigger 15, and, counter 4 is set to the initial (zero) state (the setting circuit in the drawing is not shown). The operation of the device starts from the moment the signal appears at one of the outputs of the keypads 10, receiving which raises the element OR 11. The signal from the output of the element OR 11 closes the third element AND 16 through the first input and blocks the fourth element AND 17 through the element NOT 12. the impulse from the second output of the sync blkTUY of nization 1 triggers only the third element I16, the output signal of which sets the trigger of record 14 and the tripper of reception 3 to one state. At the same time, according to the signal from the output of the third element I16, an additional code of the preselected v number is recorded in counter 4. This number is chosen from the condition of ensuring the synchronous operation of all the channels of the device and corresponds to the maximum possible time of the spread of the leading edges of signals coming from the output of the keyboard 10 in the various channels of the device. For example, if the maximum possible spread time of signals entering the various channels of the device is T, and the frequency of the pulses from the second output of the synchronization unit 1 is J-, then an additional code of the number M T- jf must be set in the counter 4 (if counter 4 must contain four bits and the IT code is written into it) ... . After a while, go ahead and give it -. nor the above operations block. nizatsii 1 stops forming them P ° output; therefore, at the output of the third element, the AND 16 imyups is terminated. After that, the synchronization unit 1 generates a pulse at the first output. Prior to this signal, the fifth element E18 is triggered, the output signal of which sets the blocking trigger 15 to the one state, as a result of which the resolution signal is removed, tfa is one of the inputs of the third element And 1 . In addition, the yo signal from the first output of synchronization uroka 1 is the first element AND 2, the input signal of which is peredvo counter 4 in the following position;;::: ..:. , : The synchronization unit 1 alternately forms the signal on the first on the second, -output. Therefore, the next impzpy; Favored his second exit. However, according to the signal from the second output of the blocochnHipo-infercine 1, the third element AND 16 and the fourth element And 17 do not work, because their inputs do not have the necessary permission signals. Thus, after the arrival of information from the outputs of the keyboard 10, the shaper of a single signal 13 generates only one controllable impulse on a wiper, which adjusts the device to count a predetermined time interval.

The next impulse from the first output of the synchronization unit 1 through the first elimination And 2 goes to the first, 1st input of counter 4. After the counter 4 performs the counting of a given number of pulses, an overflow signal appears on its output, which sets the trigger of trigger 5 into one condition. The signal from the single output of the trigger trigger 5 opens the second element on the second input. And 6, which is triggered by the next signal from the second output of the synchronization unit 1. (The signal from the output of the second epoch; ment And 6 translates the trigger of reception 3 into the left state, thereby removing the enable signal to the second input of the first elements 2. Receipt the pulses from the first input of the synchronization unit 1 to the first input of the counter 4 are terminated.

At the same time, the signal from the single trigger trigger exit 5 opens the majority element 7 in all channels through one of the inputs. After that, the device in this channel enters the standby mode until similar operations occur at least in one of the two other channels of the multichannel system. Having received at least one signal from the single output of the njCKa 5 trigger, the majority element 7 is triggered in all channels. The signal from the majority element 7 synchronously in all channels is fed to the second input of the computing unit 9. Using this signal, the computing unit 9 in all channels synchronously inputs information from the outputs of the keyboard 10.

Thus, in all channels of a multichannel system, it provides it with chronic input of information into computing unit 9 in the case of non-simultaneous feeding of input signals into different channels.

In addition, the output signal is mage. in the channel where the time count is not completed, sets the counter 4 and receive trigger 3 to the zero (initial) state, and in other channels where the time count ends, confirms the zero state of the 4 and receive trigger 3,

After the time required to perform the above operations, i.e., entering information into the computing unit 9 and setting the counter 4 and the receive trigger 3 to its initial state, the output of the delay element 8 appears

the signal that sets the trigger

start-up 5 to the zero state, and the action of the shot at the start of the majority element 7 in all kayals ends.

After entering information into the computing unit 9 from the output of the keyboard 10, the signal is removed, which results in the formation of a signal at the output of the element OR 11. Therefore, at you, the element NO 12 appears allowing the signal, which opens the fourth element AND 17 through one of the inputs ; On the next impulse from the second output of synchronization 1 sdoc, it triggers

the fourth element is AND 17, the output of which translates lockout trigger 15 and record trigger 14 to the zero state.

After that, the device is set in the initial state and ready to enter the new information from the outputs of the keyboard 10 into the deduction unit 9, which will be carried out similarly to the one described above

Consider the operation of the device when a failure or malfunction occurred in one channel of a multichannel system, leading to an attempt to issue a signal to enter information into the computing unit 9.

The channel attempts to give a false signal to the information input in the event that the trigger trigger 5 triggers unauthorizedly. The ego may occur in the following cases :. .

5 - the trigger trigger itself failed or failed 5;

- there was such a failure, under the influence of which counter 4 produced a false overflow signal;

 - an unauthorized trigger of reception 3 triggered, either in the event of failures or malfunction, or as a result of the false triggering of a single signal generator 13.

 . When in one channel a false trigger trigger 5 has occurred, SIRnal from its single output goes to OD51N from the inputs of the majority element 7 of all channels. However, the majority

 Element 7 does not work in any of the channels, since its other inputs do not have resolving signals, as a result of which none of the channels is a device. This will not generate a signal for the input of a formation in the computing unit 9. Thus, the dissynchronization of the multichannel system in the event of failures or faults in one channel is excluded.