SU840883A1 - Multifunction logic module - Google Patents

Description

The invention relates to automation, telemechanics and computer technology and is intended to be implemented by customizing the Boolean formulas specified in the basis AND, OR Vi NOT. According to the main author. St. No. 427336 is known a multifunctional logic module containing key elements, each of which contains an executive circuit made in the form of a channel with two-sided conductivity, the control input of the executive circuit of each key element is connected to the output of the control circuit of the same element. The first input-output code of the executive circuit of each key element is connected to the second input-output of the executive circuit of the previous key element and to the input-output of the module, the first and second inputs-outputs of the executive circuits, respectively, of the first and last key elements are connected to the corresponding inputs module outputs, the first inputs of the control circuits of all key elements are combined and connected to the common input of the module, the second input of the control circuit of each key element is connected to the corresponding input i module The structure of the module allows its adjustment not only from the side of its control inputs, as is done in the schemes of functional elements (valves), but also from the side of its outputs by superimposing external jumpers, which ensures the logical efficiency of such modules. A module containing two key elements can be implemented by customizing any of the two possible representatives of the types of formulas in the AND, OR, and NOT of 2 letters, the letters of the three key elements of any of the four possible representatives of the types of 3 letters; a module of four key elements of any of the ten possible representatives of the types of 4-letter formulas, etc. 1. Thus, a device of n key elements allows realizing representatives of types of formulas of n letters only. The purpose of the invention is to expand the functional capabilities of the module through the implementation of additional

representatives of types of formulas in the basis of AND, OR, and NOT.

The goal is achieved by the fact that the module additionally contains one diode, the anode of which is connected to the auxiliary input of the multifunctional logic module, the input-output of the first key element, which is connected to the first input-output of the second key element, is also connected to the cathode of the diode.

The introduction of an additional diode provides the possibility of supplying input variables X, not only to the control inputs of the module, but also the module inputs associated with actuating circuits of key elements to obtain the maximum number of representatives of formula types in the AND, OR and NOT basis from the maximum possible number of letters exceeding by one the number of key elements in the scheme. This allows for a module containing one key element and one diode to realize all representatives of the types of formulas in the AND, OR, and NOT two-letter basis; two key elements and a diode of all representatives of the types of formulas in the same two-letter basis and, additionally, three representative types of three-letter formulas; three key elements and a diode of all representatives of three-letter formulas and an additional six of ten possible representatives of four-letter types; four key elements and a diode of all representatives of four-letter formula types and additionally, sixteen representatives of twenty-four possible formula representatives from formulas five letters, etc.

FIG. 1-shows the scheme of the module that implements any representative of the types of formulas in the basis of AND, OR and NOT of 2 letters; in fig. 2 - a scheme realizing any representative of the types of formulas in this basis of 4 letters and additionally sixteen representatives of the types of formulas of the possible twenty-four representatives of the types of formulas in the basis of AND, OR, and NOT of 5 letters.

The module contains KJD04eBHe elements I, an executive circuit 2, and a control circuit 3, a diode 4, pins 5, 6 and 7, 8-15, and pins 7, 8, 10, 12 and 14 are module inputs, pins b, 11, 13, and 15 are the module's output, and pin 9 is the output of the module's house.

The anode of the diode 4 is connected to the input of the module 8. The cathode of the diode 4 is connected to the second input-output of the executive circuit 2 of the first key element 1, to the output 9 of the module and to the first input-output of the executive circuit of the second key element 1.

Input-output 6 of the module is connected to the first input-output of the executive circuit 2 of the first key element 1. Input output 11 of the module is connected to the second input-output of the executive circuit

2 second key element 1 and with nepBtJM input-output of executive circuit 2 of the third key element

1. Input-output module 13 is connected

with the second input-output of the executive circuit 2 of the third key element 1 and with the first input-output. of the executive circuit 2 of the fourth key element 1. The input-output 15 of the module is connected to the second input-output of the executive circuit 2 of the fourth key element 1. The first input of the control circuits 3 of all the key elements 1 are combined and connected to the input 5 of the module. Input 7 of the module is connected to the second input of the control circuit 3 of the first key element 1. Input 10 of the module is connected to the second input of the control circuit

3 of the second key element 1, Input 12 of the module is connected to the second input of the control circuit 3 of the third key-. element 1. The module input 14 is connected to the second input of the control circuit 3 of the fourth key element 1.

The operation of the module in various tuning modes when implementing representatives of types of non-repetitive formulas in the AND, OR, NOT basis of two, three, four, and five letters is described in the table. The first column indicates the number (n) of letters in a non-repetitive formula. The second column gives the number of all representatives of types of non-repetitive formulas separately from

2,3, 4 and 5 letters.

In the third column, arithmetic polynomials of representatives of the type are given, and in the fourth column, their algebraic expressions are implemented by the module. Columns 5–15 uniquely correspond to inputs 5, 7, 8, 10, 12, and 14, output 9, and inputs-output 1M 6, 11, 13, and 15 of the module. In columns 6-15, the presence of the corresponding input or output variable is indicated, constants - 1

and jumpers

or

on the corresponding configuration inputs, outputs and inputs-outputs of the module. Input 5 of the module is not a configuration input, therefore, column 5 in the table is empty. The table also doesn’t fill lines where arithmetic polynomials of formulas are indicated, which are not resolved by the module.

The output logic variables in the table are denoted by Y, the input variables by Hu, and the jumpers between the corresponding pins are marked P where m 1,2,3, ...- is the sequence number of the jumper.

5 8408836

Thus, a slight us-installation of an additional diode

misrepresenting the structure of a module with respect to and introducing additional output into

to the known (one supplementary-module circuit for providing a possible diode and a diode for an additional wider expansion function external output) leads to substantial possibilities should be a real increase. The functional ones should be available only at the second input-output

Module Capabilities. The first key element of the module.

Claims (1)

1. USSR Author's Certificate No. 427336, Cl. A 06 F 7/00, 1977 (prototo S0 30