SU1196928A1 - Device for comparing numbers with tolerances - Google Patents

Abstract

DEVICE FOR COMPARISON NUMBERS WITH ADMISSIONS, containing a pulse generator, elements AND, triggers, decoder, number modulus counter and trigger of the sign bit number, the input of the initial installation of the device connected to the inputs of the installation in “About triggers, single outputs of which are connected respectively to the first and the second inputs of the decoder, the outputs of which are connected to the first inputs of the first, second and third elements AND, respectively, the second inputs of which are connected to the input of the analysis of the result of the device, and the outputs are the device outputs, the pulse generator trigger input is the device trigger input, characterized in that it contains the upper and lower tolerances and two OR elements, with the pulse generator output connected to the counting inputs of the upper and lower tolerances and the counter module numbers, the installation inputs of which are the modules of the upper and lower tolerances and the device number to be analyzed, and the overflow output of the counter of the number module is connected to the generator stop input pulses, the information input of the digit sign trigger is the input of the sign bit of the analyzed number of the device and connected to the first inputs of the fourth and fifth AND elements, whose inputs are connected to the inputs of the sign bits of the lower and upper tolerances, respectively, which are inputs sign ratios S rows, respectively, lower and upper (L tolerances of the device, the outputs of the fourth and fifth elements AND are connected to the first inputs of the first and second elements, respectively, OR, the second inputs which are connected to the overflow outputs of the counters of the lower and upper tolerances, respectively, and the outputs are connected to the counting inputs of the first and second triggers, respectively. with O5 with GS as

Description

The invention relates to automation and computing and can be used in computer devices and threshold devices.

The purpose of the invention is to simplify the design of the device.

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

The device contains a generator of 1 pulses, a counter 2 number module, a counter 3 lower tolerances, a counter 4 upper tolerances, elements AND 5 and 6, elements OR 7 and 8, triggers 9 and 10, a decoder AND, elements 12-14, start input 15 device, input 16 digits of the analyzed number, input 17 digits of the lower tolerance, input 18 digits of the upper tolerance, inputs 19-21 of the modules of the analyzed number, lower and upper tolerances, respectively, input 22 of the initial setting, input 23 analyzing the result, outputs 24-26 devices and trigger 27 sign times yes number structurally conductive input to the counter 2.

The device works as follows.

Input 22 receives a signal setting triggers 9 and 10 to the zero state. Then the binary codes of the analyzed number, the lower and upper tolerances, are fed to the inputs 16-21 of the device.

All numbers entering the device from inputs 16-21 are represented in counters 2-4 as follows.

The sign bits of the analyzed number, the lower and upper tolerances of the record, respectively, in the trigger 27 sign bits, the numbers and sign bits of counters 3 and 4 in the direct code: "- - 1," - (- - 0. Modules of numbers are written into numeric counter bits 2-4 in the reverse code.

Let the analyzed number be -4, the lower tolerance is -6, the upper tolerance + 1. Then the counter 2 with trigger 27 contains the code 1.011, the counter 3 is 1.001, and the counter 4 is 0.110. At the moment the numbers are written to the counters 2-4, the final installation of the flip-flops 9 and 10 takes place, which depends on the combination of signs of the analyzed number and tolerances. In this case, the single signals from the inputs 16 and 17 of the device arrive at the inputs of the AND 5 elements. A single signal from the output of the AND 5 element through the OR 7 element enters the counting input of the trigger 9 and sets it to the single state. The trigger 10 remains in the zero state, since from the input 18 of the device

at one of the inputs of the element And 6 receives a zero signal. The device is ready for operation.

Input 15 is provided with a pulse generator trigger signal. The pulses from the generator 1 are fed to the summing inputs of counters 2-4. The pulse generator 1 is stopped when the overflow signal arrives at its input from counter 2. In this case, generator 1 generates five pulses. At the same time counters 3 and 4

the overflow conditions 9 and 10 do not change: the trigger 9 is in the unit state, the trigger 10 is in the zero state, which corresponds to the falling of the analyzed number in the range between the upper and lower tolerances. If the analyzed number is less than the lower tolerance, then after stopping the generator 1 pulses, the flip-flops 9 and 10 are in the zero state, if the analyzed number is greater than the upper tolerance, then both flip-flops are in the single state.

The AND decoder, decoding the state of the flip-flops 9 and 10, outputs a signal to one of the AND 12-14 elements. After that, a signal is fed to the result analysis input 23, which through one of the elements 12-14 enters one of the outputs 24-26 of the device. The appearance of a signal on one of the outputs 24--26 determines the position of the analyzed number relative to the tolerances.

The proposed device is simpler than the known one, since

contains fewer elements, while retaining all the functions of a known device.

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Claims (1)

A DEVICE FOR COMPARISON OF NUMBERS WITH TOLERANCES, containing a pulse generator, AND elements, triggers, a decoder, a number module counter and a sign for a digit sign, the input of the device’s initial installation being connected to the inputs of the device at “0” triggers, the unit outputs of which are connected respectively to the first and the second inputs of the decoder, the outputs of which are connected to the first inputs of the first, second and third elements And, respectively, the second inputs of which are connected to the input of the analysis of the result of the device, and the outputs are the output device, the trigger input of the pulse generator is the trigger input of the device, characterized in that, in order to simplify the circuit, it contains counters of upper and lower tolerances and two. OR element, and the output of the pulse generator is connected to the counting inputs of the counters of the upper and lower tolerances and the counter of the number module, the installation inputs of which are inputs of the modules of the upper and lower tolerances and the analyzed number of the device, and the overflow output of the counter of the number module is connected to the stop input of the pulse generator, information the input of the sign of the digit digit is the input of the digit of the analyzed number of the device and is connected to the first inputs of the fourth and fifth elements AND, the second inputs which are connected to the inputs of the sign bits of the counters of the lower and upper tolerances, respectively, which are the inputs of the signs of the sections of the lower and upper tolerances of the device, the outputs of the fourth and fifth elements AND are connected to the first inputs of the first and second elements, OR, the second inputs of which are connected with overflow outputs of the counters of the lower and upper tolerances, respectively, and the outputs are connected to the counting inputs of the first and second triggers, respectively.