SU1365074A1 - Device for comparing numbers - Google Patents

Abstract

The invention relates to discrete automation and computing and can be used in the implementation of the hardware of discrete automation and electronic computers for comparing numbers. The purpose of the invention is to expand the functionality of the device due to the possibility of comparing the numbers represented by the binary code. The device contains a generator of 8 sync pulses, two triggers 1, 2, element OR 5, two elements AND 3 and 4, and two elements NOT 6 and 7. The proposed device allows you to compare the numbers represented by the phase-pulse and binary codes received by the leading bits if all bits of the compared numbers are equal, the signal will be only at one output of the device. If the bits are unequal, the result of the comparison is determined by the ratio of the higher bits of the numbers being compared. 1 il. with “b sl

Description

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The invention relates to discrete automation and computer technology and can be used in the implementation of discrete automation and computer hardware for comparing numbers.

The purpose of the invention is to expand the functionality of the device due to the possibility of comparing the numbers represented by the binary code.

The drawing shows a diagram of a device for comparing numbers.

The device contains triggers 1 and 2, elements AND 3 and, elements OR 5 and NOT 6 and 7, generator 8 clock pulses, having output 9, inputs 10 and 11 of the device, input 12 of the initial installation of the device, outputs 13-15 of the device.

The device works as follows.

Before starting work, a signal is supplied to the input 12 of the device, which sets the triggers 1 and 2 to the zero state, and a signal appears at the output 14. The signals at the output 9 of the generator 8 of the clock pulses appear in each clock cycle. The numbers are given by the higher bits ahead.

Let the numbers represented by the phase-pulse codes be applied to the device inputs.

If, at the transmission of any bit, the signal at input 11 appears earlier than the signal at input 10, the AND 4 element and the OR 5 element opens, the trigger 2 goes into one state, the signals appear at the outputs 14 and 15 devices. Further, the state of the flip-flops 1 and 2 cannot be changed, since And 3 and 4 are closed due to the absence of a signal at the zero output of flip-flop 2 If the signal at input 10 appears before the signal at input 11, then And 3, trigger

1 goes to the unit state, opens the element OR 5 and the trigger

2 transitions to a single state. Signals appear at outputs 13 and

15 devices. In the future, the states of the flip-flops 1 and 2 cannot be changed, since the And 3 and 4 elements are closed due to the absence of a signal at the zero output of the flip-flop 2.

If the signals at inputs 10 and 11 appear alone, the elements

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Both 3 and 4 are closed, triggers 1 and 2 remain in the zero state, the signal is only at the output 14 of the device J. Thus, if all bits of the numbers being compared are equal, the signal is only at the output 14 of the device. Depending on how much weight is attributed to this or the cycle of transferring the discharge, the number, the impulse of which came in the higher order earlier, may be smaller or larger. The signals at the outputs of the device should also be treated accordingly.

Suppose that the inputs are supplied with numbers represented by a binary code (one in the digit of the number is encoded by a pulse, zero - by the absence of a pulse). Operation of the device in this case occurs in the same way as when comparing the numbers represented by the phase-pulse code. If the number at input 10 is greater than the number at input 11 (when transmitting the next bit, there is a pulse at input 10, and there is no pulse at output 11), signals appear at outputs 13 I 15 if the number at input 10 is less than the number at input 11, signals appear at the outputs 14 and 15 of the device.

Claims (1)

Invention Formula A device for comparing numbers J contains a clock generator, the first and second triggers, the first and second elements AND, the OR element, and the input of the first compared number of the device is connected to the first input of the first element AND, the second input of which is connected to the output of the clock generator, and the output is connected to the installation input one state of the first trigger, the initial input 45 of the device installation is connected to the input of the installation in O of the second trigger, the inverse output of which is connected to the third input of the first element I, and the direct output is the first output gQ result of the device, characterized in that, in order to expand its functionality due to the possibility of comparing the numbers represented by the binary code, two NOT elements are introduced in it, the input of the second comparative number of the device being connected to the first input of the second element AND NOT - with the fourth entrance per 3 13650744 And, the second input is not connected to the input of the first The horn is combined with the second input of the second device, the input The left AND element, the output of which co-the initial installation of the device is adjacent to the first input of the element OR, is connected to the installation input the output of which is connected to the input of the first trigger, direct output setting into one state, the second one is the second output of the flip-flop trigger, the inverse output of which the device is connected to and additionally connected to the three-second input of the OR element, the inverse of the input of the second element AND, the fourth output is the third output Vertical input is through the second result of the device.