SU1083180A1 - Polyfunctional logic module - Google Patents

Abstract

MULTI-FUNCTIONAL LOGIC MODULE containing NOT elements and equivalences, with the first, second and third inputs of the module being connected. respectively, to the input of the first element and NOT to the first and second inputs of the first equivalence element, the third input of which is connected to the output of the first element, the input and output of the second element are NOT connected to the first and second outputs of the module, respectively; in order to expand the scope of application due to the possibility of realizing all the functional values in the basis of two variables and a number of additional functions, it additionally contains the second element of equivalence, elements of nonuniqueness, and OR, the fourth and fifth fifth inputs of the module are connected to the inputs of the second equivalence element, respectively, the outputs of the first and second equivalence elements are connected to the inputs i of the unequality element and the first AND element, respectively, the output (L of which is connected to the first input of the OR element whose output is connected to the input of the second element is NOT, the second input of the element OR is connected to the output of the second element AND, whose inputs are connected to the output of the inequality element and to the sixth input of the module, respectively. 00 00 00 P

Description

The invention relates to computing and microelectronics and is intended to implement all the logical formulas of three variables. A logic module is known that implements the specified types of logical transformations implemented on the AND, OR fL elements. However, this module does not allow em to implement all logical formulas of three variables. The closest in technical essence to the proposed is the trivial automaton, cojD, which contains elements of inequality. And, NOT, the output of the first element is NOT the inverse output of the module, the input of the first element is NOT connected to the outputs of the unequal element and the direct output of the automaton, the inputs of the inequality element are connected. To the two inputs of the automat and the output of the second element NOT, the input which is connected to the third input of the machine zj. However, the known automaton does not implement all logical functions in the basis of two variables and a number of additional functions. The purpose of the invention is the expansion of the field of application due to the possibility of implementing all the functional values in the basis of two variables and a number of additional functions. The goal is achieved by the fact that a multifunctional logic module containing NOT elements and equivalences, the first, second and third inputs of the module are connected respectively to the input of the first element NOT and to the first and second inputs of the first equivalent element, the third input of which is connected to the output of the first element NOT , the input and output of the second element are NOT connected to the first and second outputs of the module, respectively, further comprises a second equivalence element, inequality elements, AND and OR, and The third and fifth inputs of the module are connected to the inputs of the second equivalence element, respectively, the outputs of the first and second equivalence elements are connected to the inputs of the nonequivalence element and the first AND element, respectively, the output of which is connected to the first input of the OR element, the output of which is not connected to the input 1802 of the second element, the second input element OR is connected to the output of the second element AND, the inputs of which are connected to the output of the unequal element and to the sixth input of the module, respectively. The drawing shows the scheme of the proposed module. The module contains inputs 1-6, the element is NOT 7, the elements of equivalence are 8 and .9, the element of inequality is 10, the elements are AND 11 and 12, OR 13, NOT 14 and the outputs 15 and 16. In the speaker, inputs 1-6 of the module are given O , 1, A, B, C In accordance with each set of these signals, the corresponding logic functions are removed from outputs 15 and 16. The module configuration algorithm is presented in Table. 1. In accordance with the logical structure, the output 15 of the module is described by the expression At the output of IU t - 15 Let the variable O, B, C, A, 1.0 be applied to the inputs 1-6 of the module, then at the output 15 we have F, 5 R (R ( 0, B, C), R (A, 1)) & OV VR (6, B, C) & R (A, 1) ABC, at the output 16 of the module F ABC A V В V С C. In the same way, the module functions for other values of the input variables. In addition to the functions listed in Table 1, the modul allows to implement all the loic functions of two variables. The configuration algorithm is presented in table. 2. The operation of the module for this case is similar to the above. Thus, the many-function logic module implements those

the same logical functions as the known automaton. In addition, the proposed module has wider areas of application, since it implements all the logical functions of two variables, as well as a number of other functions that go beyond the functionality of the trivial automaton,

In order to compare the proposed module with the base element, the K1LR553 chip, selected by the domestic industry, was selected. This microcircuit provides the implementation of all the logical functions that are implemented by the proposed module. However, compared with the multifunctional logic module, the basic

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the element has a large number of inputs (9 instead of 6 without taking into account the inputs for expansion). In order to implement the desired logical functions, it is necessary to supply not only logical variables but also their inversions to the inputs of the basic element 1, which greatly complicates the algorithm of its adjustment and requires additional commutation

Q devices, which generally leads to the complication of its structure. In addition, the base element has narrow circuitry capabilities, since it has only one output.

5 Thus, the proposed module has a number of significant advantages over the base element.

Table 1

Values of the signals at the inputs

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A BO00.0

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And AV AUV Table2 implemented at the outputs

Continued table. 2

Claims (1)

MULTI-FUNCTIONAL LOGIC MODULE containing elements of NOT and equivalence, and the first, second and third inputs of the module are connected. respectively to the input of the first element NOT and to the first and second inputs of the first element of equivalence, the third input of which is connected to the output of the first element NOT, the input and output of the second element are NOT connected to the first and second outputs of the module, respectively, characterized in that, with In order to expand the scope due to the possibility of implementing all functional values in the basis of two variables and a number of additional functions, it additionally contains the second element of equivalence, elements of disambiguation, AND and OR, m the fourth and fifth inputs of the module are connected to the inputs of the second element of equivalence, respectively, the outputs of the first and second elements of equivalence are connected to the inputs of the element of ambiguity and the first element AND, respectively, the output of which is connected to the first input of the OR element, the output of which is connected to the input of the second element NOT, the second input of the OR element is connected to the output of the second AND element, the inputs of which are connected to the output of the unequal element and to the sixth input of the module, respectively. SU ,,,, 1083180