SU1397926A1 - Data input device - Google Patents

Abstract

The invention relates to computing and can be used in devices for entering information into a digital computer. The aim of the invention is to increase the reliability of information input due to hardware switching of the priority of subscribers. The device contains two registers, six triggers, three OR elements, nine AND elements, two NAND elements, two NOT elements, three AND groups, and a group of OR elements. 1 il.

Description

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The invention relates to computing and can be used in devices for inputting information into digital computers.

The purpose of the invention is to increase the reliability of information input due to hardware switching of the subscriber priority.

The drawing shows a diagram of the device for entering information.

The device contains the first 1 and second 2 triggers, the first 3 and second 4 elements NOT, the first 5 and second 6 elements AND, the first element OR 7, the elements AND 8 of the first group, the second element I. GP 9, nepBbrii 10 and the second 11 re-h1gtr -1, toetoy 12 and seventh 13 elef MefiTb AND, a quarter and fifth 15 trigger, third element And 16, eleme sags And 17 and 18, second and third groups, elements OR 19 groups, fourth 20 and fifth 21 elements And, three

the third element OR 22, the third 23 and the processor neck 25 is similar to the previous 24 trit heres, the eighth 25 and the ninth to the second. 26 elements And, the first 27 and second 28

Simultaneously with the request from the second subscriber, information is received that is stored on register 1I. 3Q Information is transmitted to the DVR in the same manner as described. If the request to interrupt, for example, from the second subscriber arrived before the end of the exchange session by the previous request, then the request from the second subscriber is remembered on trigger 2 and one input input-trigger 15 arrives, which is set to State 1 after the transition 14 O state, i.e. when the exchange session is completed on request from the first subscriber, and the Ready signal on request from the second subscriber is set at the output. According to the signals of the Sample, Criem trigger 23 regresses the signal flow of the N-Ready Elements.

The device works as follows

Preloads weight triggers are set to the original position Reset, Request O for interrupt

A call arriving from the first subscriber sets trigger 1 to position 1, and since trigger 15 is in step 1 | O, the signal from trigger output 1 through element 12 goes to trigger input 14 and sets it to position 1,

The signal from the output of the trigger 14 through the element I31I 22 enters the input of the element AND 16, and since the trigger 23 is in position 1, the signal l is set at the output of the element 16. oTOBHOCTb. Simultaneously with the request from the first subscriber, information is received that is stored on register 10. The output of trigger 14 permits the passage of information from the output of register 10 through elements AND 17 of the second group and group of elements OR 19 and. the corresponding inputs of elements And 8 of the first group. The Readiness signal enters the digital computer and causes processor interruption. Signals Sampling, Criem, which comes from the output of the element And 5 to the inputs of the elements And 8 of the first group, the digital computer receives information

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PII, which was received on this request. At the same time, the Sampling and Reception signals set the trigger 23 to the zero state, which prohibits the passage of the Readiness signal on the device output,

(The signal from the output of the element AND 5 through the element OR 7 is fed to the input of the element AND 20, and since the trigger 14 is in position G, the signal passes through the element AND 20 and sets the trigger to its original position.

After the signal The digital computer receives a signal Completed. Signals Sampling, Execution set to the initial position the triggers 23 and 14 and confirms the state O of the trigger 15.

The interrupt request O from the second subscriber sets triggers 2 and 15 to state 1, and the device issues a signal to interrupt the processor, similarly to the previous one.

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Simultaneously with the request from the second subscriber, information is received, which is stored on register 1I. 3Q Information is transmitted to the DVR in the same manner as described. If the interruption request, for example, from the second subscriber arrived before the end of the exchange session by the previous request, then the request from the second subscriber is remembered on trigger 2 and the 1st input trigger 15 arrives, which is set to State 1 after the trigger 14 transition to State O i.e. when the exchange session is completed on request from the first subscriber, and the Ready signal on request from the second subscriber is set at the output. According to the signals of the sample, Criem trigger 23 adjusts the passage of the signal Ready5

iocTb in the digital computer and permits its passage only after resetting trigger 23 to the initial state by the falling edge of the Sample and Executed signals.

In the case of a skin situation that occurs when triggers 1 and 2 are in state 1, for example, as a result of simultaneous requests from the first and second subscribers or a malfunction of one of the subscribers, a priority scheme is triggered, and since the signal is

state of

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then trigger 24,

is in the state O, priority is given to the request from the first subscriber.

In order to eliminate the case of a possible malfunction of the first subscriber, when he is constantly in request mode, priorities can be changed after each request execution cycle by applying O to a Signal mode, which translates trigger 24 into counting mode, while the DVM exchanges information with both subscribers.

Claims (1)

Invention Formula A device for entering information containing five triggers, two registers, seven elements AND, three elements YPI, two elements HF, three groups of elements AND, a group of elements PNI, and the inputs of the first and second elements are NOT called the inputs of the device for connection to the outputs of the request the first and second subscribers, respectively, groups of information inputs of the first and second registers form groups of device inputs for connecting to groups of information outputs of the first and second subscribers, respectively veterans the inputs of the first and second And elements are the device inputs for connecting to the outputs Receiving and Performing a digital computer, respectively, the second input of the first element I is connected to the second input of the second element I, and is the device input for connecting to the output Sampling a digital computer, the output of the third element I is the output of the connecting device to the Readiness of the DVM input, the outputs of the And elements of the first group form a group of outputs of the device for connection to the group of information inputs of the DVR, the first zero input of the first trigger is connected to the first Zero input of the second About the trigger, with the first inputs of the first and second elements OR, with the installation inputs of the first and second registers and is the input of the device for connection to the installation output of the digital computer, while the outputs of the first and second elements are NOT connected to the single inputs of the first and second triggers, respectively, the second the zero inputs of which are connected to the outputs of the fourth and fifth elements And, respectively, the first inputs of which are connected to the output of the first element . ,, .. t5 -, „25 30 50 55 45 Or, the second input of which is goedi) 1E 1 with the outputs of the first element I, with zero input of the third trigger, with the first inputs of elements AND of the first group, the second inputs of which are connected to the outputs of the corresponding elementons OR groups, the first inputs of which are connected respectively to the outputs of elements AND the second Groups, the first inputs of which are connected to the group of information outputs of the first register, the record entry of which is connected to the output of the first trigger and to the first input of the sixth element I, the output of which is connected to the single input four th trigger, n levo1 input coupled to an OR gate vyhotsom torogo with well; 1ev GoGo n th input trigger and the unit) th {SRW of inputs; The first trigger is connected to the first input of TpCTi.eri) Elemeitl I, the second input of which is soy; the first element of fjbixor is the house of the third element R-SHI, the first input of which is connected to the zero input of the fourth trigger and the first input of r .Edm (1 о. к ррт и And, the second input of which is connected to the output of the second trigger and from the record of the second register, the group of information outputs of which is connected to the pore inputs of the elements And the third; groups, the BTOpbie inputs of which are connected to the second input of the fifth eleusnta I and with a single exit of the n that trigger, zero The output of which is connected to the input of the sixth element I and the second input of the third element of the SRI, the single output of the fourth trigger is connected to the second inputs of the fourth element AND and the elements AND of the second group, the outputs of the elements AND of the third group are connected respectively to the second inputs of the elements OR group, the output of the second element AND is connected to the second input of the second element OR, the output of the seventh element AND is connected to the single input of the fifth element AND, which is the fact that, in order to increase the reliability of information input, in it There are triggers, two NAND elements and two AND elements, the zero input of the sixth trigger tag is the device input for connecting to the output of the Digital Mode, and the output of the first And element is connected to the counting input of the sixth trigger, the single and zero outputs of which are connected to first entrances the first and second elements AND-NOT, respectively, the second inputs of which are connected to the output of the eighth element AND, the first and second inputs of which are connected to the outputs of the first and second triggers, respectively, the outputs of the first and second elements AND-NOT compare them Request from 1 subscriber Request from Done Vzhod In- (i.e. V CSpac P Login UHifjof ip mania 2nd -w -f m mm «« «J J- subscriber nf) are united with the third inputs of the sixth and seventh elements AND, respectively, the single inputs of the fourth and fifth triggers are connected to the first and second inputs of the ninth AND element, respectively, the output of which is connected to the third input of the second OR element. 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