SU1686431A1 - Input device - Google Patents

Abstract

The invention relates to automation and computing, in particular to devices for inputting information, and scrolling i and using in microprocessor and display technology. The purpose of the invention is to improve the reliability of the device by eliminating simultaneous requests for information exchange from several objects. The goal is achieved that in the known device, containing successively connected driver 1 request pulses, block OR elements, register 3, element OR 4 and AND 5 element, sequentially connected driver 11 request pulses, block 12 elements OR, register 13, element IPI 14, element And 15, trigger 1C, element And 17 as well as trigger 7, element And 8. generator 24, switch 25, entered elements OR 5, 20, 21. 22, triggers 9, 18, elements 10 and 19 of the prohibition and element MAJORITY 23 with the circuit connections listed in formula Y The device clears the priority of one of the objects to be exchanged during the initial installation of devices and in a critical situation, as well as the removal of the address of the requested object after resetting information about its requests, respectively, at the beginning and end of the resolution to accumulate information about exchanges. 1 silt (L S

Description

The invention relates to automation and computing, in particular and to devices for entering information, and can be used in microprocessor and display technology.

The purpose of the invention is to improve the reliability of the device by eliminating simultaneous requests for information exchange from several objects.

The drawing shows the proposed device.

It contains the request generator 1, the block 2 elements OR, the register 3, the element OR 4, the element AND the 5th element OR 6, the trigger 7. the element AND 8, the third trigger 9, the element 10 prohibition the driver 11 request pulses, block 12 elements OR, register 13. second element OR 14, fourth element AND 11 second trigger 16, third element I l, fourth trigger 18, element 19 lock E sixth element OR 20, third element OR 21, fourth element OR 22. element MAJORITY 23 , generator 24, switch 25, resolution input 26, setup input 27. information outputs Dy 28 and address outputs 29, 30 devices

The device works as follows.

Before starting the operation of the pulse on the input 27 through the elements 20-22, the trigger 16 and the registers 13. 3 are set to zero

about

00 Oh

B

(BUT)

state, and the trigger 7 through the element 6 - in one state. This sets the priority for the information exchange of the register 3. The appearance of a pulse of an exchange request at one of the outputs of the former 1, or the former 11 is fixed by the register 3, or 13 by the generator pulse 24. When a single pulse arrives at the input 26, indicating the end of the exchange, it is set to the zero state register 3 along the chain of elements 8, 22, since the trigger 7 permits this operation. At the end of the pulse at input 26, element 10 is released, resetting triggers 7, 9, and if at least one 1 in the chain of elements 14, 15 are present in register 13, trigger 16 changes its state to one, allowing output to output 28 through switch 25 of the information from register 13. The next signal at input 26 is set to O register 13, and at the end the signal is set to O and trigger 16, allowing elements 1, 6 to record 1 to trigger 7 to allow information from output 28 to be output to register 3. Similarly, information is alternately issued from the register Isters 3, 13. If the exchange request captures both the trigger 7 and 16 at any time, the elements 23, 6, 20 return the device to its original state, i.e. the trigger 7 to 1, and the trigger 16 - in O. Using trigger 9 (18) and element 10 (19), trigger 7 (16) returns to the zero state only at the end of the pulse at input 26, which ensures reliable operation of the device due to initial setting of register 3 (13 ) and remove the recording signal from trigger 7 (16), returning it to the zero state. Thus, by distributing the reset and recording of triggers in time and by automating the withdrawal of the device from a critical situation in the case of a simultaneous request for an exchange from two objects, an increased reliability of the device is achieved.

Claims (1)

The device for inputting information contains the first register, the information inputs of which are connected to the corresponding outputs of the first block of OR elements, and the output with the corresponding inputs of the first OR element and the corresponding information inputs of the first switch group and the first highlight of the OR elements, the inputs of the second group of which are connected to the corresponding outputs of the first request shaper, the second block of OR elements, the inputs of the first group of which are connected to the corresponding outputs s of the second register, the corresponding inputs of the second OR element and the corresponding information inputs of the second switch group, the inputs of the second group with the corresponding outputs of the second request pulse maker, and the outputs with the corresponding information inputs of the second register, the generator whose output 0 is connected to the synchronous inputs of the first and the second register, the first element AND, one input of which is connected to the output of the first element OR, the first trigger, whose single output is connected to the first input the second About the AND element and the first control input of the switch and is one address output of the device, the second trigger, the zero output of which is connected to another input of the first 0 of the AND element, and the single output is another address output of the device and is connected to the first input of the third And element and the second control input of the switch, whose outputs are the corresponding 5 corresponding information outputs of the device, and the fourth AND element, one input of which is connected to the output of the second OR element, the other input with zero output of the first the trigger, and the output with the single input of the second trigger, the second inputs of the second and third elements I are the device enable inputs, characterized in that, in order to increase the reliability of the device by eliminating 5 simultaneous requests for information exchange from several objects, it contains the element MAJORITY, the first and second elements of the prohibition, the third and fourth triggers, 0 the third, fourth, fifth and sixth elements OR, the first inputs of which are the installation input of the device, and the second are connected to the output of MAJORITY element, the first and second axes of which are connected to the unit outputs of the corresponding triggers, the output of the second element I is connected to the control input of the first prohibition element by the single input of the third trigger and the third 0 input of the fourth element OR, the output of which is connected to the installation input of the first register , the output of the third element AND is connected to the control input of the second prohibition element, a single input of the fourth and fifth trigger and the third input of the third OR element, the output of which is connected to the The second input of the first register is connected to the output of the third trigger, and the output is connected to zero inputs of the first and third triggers, the output of the second inhibit element is connected to the third input of the sixth OR element and the fourth input of the fourth trigger, and the third input of the fifth element OR connected to the output of the first element AND, and the output - g, a single input of the first trigger, the output of the sixth element OR is connected to zero The main input is to the output of the fourth trigger, the 5th input of the second trigger. 28