SU1359904A1 - Device for checking binary counters with consecutive input of information - Google Patents

Abstract

The invention relates to computing and can be used in hardware for automated control and adjustment of digital computer nodes. The purpose of the invention is to expand the scope. The device contains a register 1, a comparison unit 3, a pulse shaper 4, and a programmable pulse generator 5. The introduction of element 7, trigger 6, display unit 8 and switch 9 allows the control of counters and frequency dividers having an external output from the higher bit and not having an installation bus to the initial state. 1 il.

Description

The invention relates to electronic computing and can be used in hardware for automated control and adjustment of digital computer nodes.

The aim of the invention is to expand the scope.

The goal is achieved by introducing new design features that provide the ability to control counters, frequency dividers, with and without the installation input to zero.

The drawing shows a block diagram of a device for controlling binary counters with sequential input of information.

In the drawing, a register 1, a controlled counter 2j, a comparison unit 3, a pulse generator 4, a programmable pulse generator 5, a trigger 6, element 7, an indication unit 8, a switch 9, input information buses 10, an installation bus 11, control bus 12, first and second control outputs 13 and 14, information inputs 15.

The input of the pulse former 4 is connected to the output of the comparison unit 3, the first group of inputs of which is connected to the output of the register 1, whose inputs are connected to the input information buses 10, the control bus 12 is connected to the input of the programmable pulse generator 5, the first output which is connected to the first control output 13, which is connected to the installation input of the zero of counter 2 (if counter 2 has an installation input of zero), the second group of inputs of the comparison unit 3 is connected to information inputs 15, and to the outputs of the counter 2, input 8 of the unit The indication is connected to the inverse output of the trigger 6, the setup input to the unit and the direct output of which are connected respectively to the bus 11 of the installation and to the first input of the And 7 element, the second input of which is connected to the second output of the programmable generator of 5 pulses and to the first input of the switch 9, the second input and output of which are connected, respectively, to the output of the element I 7 and to the second control output 14, which is connected to the counting input of the counter 2, the output of the comparison unit 3 is connected to the clock input of the trigger 6.

five

0

five

0

five

0

five

0

five

As trigger 6. 1 K trigger can be used, in which the direct output is connected to inputs 1 and K.

The device works as follows.

 When controlling the counter 2, having a setup zero input, the switch 9 is set to a position in which its first input is connected to its output. Further, the first control code is loaded into the register 1 via the busses 10, then the trigger 6 is set to 1 via the bus 11. After the pulse arrives along the bus 12, the generator 5 first forms a pulse at its first output, according to which the counter 2 is set to the initial (zero) state the Then the generator 5 forms at its second output a burst of pulses, the number of which corresponds to the code recorded in register 1, and which are fed through switch 9 to the counting input of counter 2.

If counter 2 is healthy, then after applying a burst of pulses to its input, the code of the number at the outputs of counter 2 coincides with the code of the number at the outputs of register 1, at the output of the comparison block 3 a difference is generated from 1 to O, which starts driver 4 and sets to O trigger 6. The impulse at the output of the driver 4 captures the fact that the health of the counter 2.

Otherwise, if counter 2 is faulty, a health signal is generated at the output of driver 4. Further, the next code of control information is recorded in register 1, and the programmable pulse generator 5 generates and supplies the corresponding binary sequence to the input of counter 2 and, just as in the first case, the information at the outputs of register 1 and counter 2 is compared. As long as the health of counter 2 is not completely checked. When checking counter 2, which has an output from the highest bit and does not have a setting input to the initial (zero) state, first sets initial state of the counter 2.

To do this, the bit of the reference register 1, corresponding to the highest bit of the counter 2 to be checked, is 31

O is written if the counter being scanned is summing, or 1 if counter 2 is subtractive. The switch 9 is set to a position in which the output of the element AND 7 is connected to the counting input of the counter 2.

A programmable generator 5 is prepared for generating a binary sequence with the number of pulses N 5; 2, where n is the number of bits of the checked counter 2. This sequence is intended for setting the counter 2 to the initial state. Further, the signal supplied from the bus 11 to the input of the installation in 1 of the trigger 6, the latter is set to 1. At the same time, from the direct output of the trigger 6 to the input of the And 7 element, the signal 1 (allowing the passage of information from another input of the And 7 element to the her, exit). The display unit 8 is connected to the inverse output of the trigger 6, so it is extinguished (at its input a signal O).

The signal supplied to the bus 12, Gonenator 5 generates a binary sequence coming through the element And 7 and the switch 9 to the input of the counter 2.

If the checked counter 2 is summing, then its installation in the initial state (in O), regardless of the stored information (if the counter is in good condition), is characterized by switching the high bit from 1 to O

If the checked counter 2 is subtractive and it is healthy, then the most significant bit switches from 0 to 1. The information at the output of the high bit of counter 2 is compared using block 3 of the comparison with the information stored in the corresponding bit of register 1. As a result, In Comparison Unit 3, regardless of the type of counter (subtracting or summing), a voltage drop from 1 to O will be generated. With this voltage drop applied to the clock input, trigger 6 switches to O. element And 7, which This interrupts the arrival of a binary sequence of signals from the output of the generator 5 to the input of the checked counter 2. Counter 2 is set to the initial state. The lighting of the display unit 8 fixes the fact of the installation of Counter 2 in the initial

599044

condition. If counter 2 is faulty, then after the generation of the binary sequence is completed, it will not be set to the initial state and with the display unit 8 will remain canceled.

one

After setting the counter 2 to the initial state, the switch 9

The JO is set to a position in which the output of the generator 5 is connected to the input of the counter .2, and the further check of the counter 2 takes place by supplying programmable inputs to its input.

J5 by the number of pulses of binary sequences, by comparing the information at its output with the reference one as well, as described.

20 Thus, the proposed technical solution provides control of meters with sequential input of information, having an external output from the senior bit and not having a bus 25 of installation to the initial state,. those. the range of checked counters has been expanded.

Claims (1)

Invention Formula thirty A device for monitoring binary counters with sequential input of information, containing an installation bus, a programmable pulse generator, , g register, comparison unit and pulse generator, the input of which is connected to the output of the comparison unit, the first group of inputs of which is connected to the outputs of the register, whose inputs Q is connected to the input information buses, the control bus is connected to the input of the programmable pulse generator, the first output of which is connected to the first control output,  The second group of inputs of the comparison unit is connected to information inputs, characterized in that, in order to expand the scope of application, an element I, switch, trigger, display unit, whose input is connected to the inverse output of the trigger, set input 1 and direct are entered into it. the output of which is connected respectively to the installation bus 5 and with the first input of the element I, the second input of which is connected to the second input of the programmable pulse generator and to the first input of the switch The sensor, the second input and output of which is output, the output of the comparator unit is connected respectively with the output to the clock input of the trigger element And and to the second control key.