SU907803A2 - Multifunction logic element - Google Patents

Description

(5) MULTIFUNK | IONAL LOGICAL ELEMENT

I

The invention relates to computing.

According to the main auth. No. 686146 is known a multifunctional logical element containing elements of equivalence and elements AND.

However, this element has a low functional reliability, since upon exit from any of the schemes of this element, the functionality is drastically reduced.

The purpose of the invention is to increase functional reliability.

To achieve this goal, a multifunctional logic element containing two equivalence elements, the inputs of which are connected to the corresponding information and control inputs, and the outputs through the AND element are connected to the first input of the third equal sign, the second input of which is connected to the corresponding control input. two input and three output elements of equivalence and three elements AND, and four inputs of the device are connected in pairs to the inputs of two input elements of equivalence, out rows of input elements equivalence pairs are connected to three respective inputs of AND gates whose outputs through the output members connected to the outputs of equivalence device, second inputs BuV Khodnev elements podkgyocheny equivalence to a corresponding device entry.

The drawing shows the functional diagram of the device.

The device contains information inputs 1 and 2, configuration inputs 3, 4 and 5, input elements 6-9 equivalence (comparison), elements 10-13 And, output elements 14-17 equivalence. The logical element operates as follows. The binary codes of the operands are fed to the inputs 1 and 2, and the tuning signals from the set of | 0.1, A1, A2J in accordance with the tuning algorithm (see table. At the same time, the logical function is removed from outputs 18–21. In the event of an exit from any of schemes 6–3, 10–13. C – 17 functionality The devices remain the same. This is evident from the presented functional diagram. Each logical output of the device is removed by the logical function 8 according to the expression YR) fR (Aj, UaL) UZ where - the function of equivalence; i Uj - tuning signals. Thus, the proposed device implements all the logical 9, 4 functions of two variables and has several advantages. First, the device is structurally uniform, which determines its manufacturability in integrated circuits, and secondly, it has high speed, since it consists only of three stages of logic elements. RfX} Me, the device is distinguished by high functional reliability, since it implements all the logical functions of two variables, even in the event of a failure of its elements. The use of devices of this type determines an increase in the reliability and survivability of devices synthesized on its basis, as well as simplifying the control of their functioning. invention invention Multifunctional logic element according to the author of auth. N, characterized in that, in order to increase the functional reliability, two input and three output elements of equivalence and three elements AND are entered into it, and the four inputs of the device are connected in pairs to the inputs of two input elements of equivalence, the outputs of all 36 input elements to the inputs of the three corresponding elements And, the outputs of which through the output elements of equivalence are connected to the outputs of the device, the second inputs of the output elements of equivalence are connected to the corresponding input y troystva. Sources of information taken into account in the examination 1. USSR author's certificate Jf, cl. H 03 K 19/00, 1977.

Claims (1)

Claim Multifunctional logic element according to ed. St. No. 686146, characterized in that, in order to increase functional reliability, two input and three output equivalence elements and three AND elements are introduced into it, and the four inputs of the device are connected in pairs to the inputs of two input equivalence elements, the outputs of all 907803 6 input equivalence elements are connected in pairs to the inputs of the three corresponding AND elements, the outputs of which through the output elements equal to 5 values are connected to the outputs of the device, the second inputs of the output equivalence elements are connected to the corresponding input of the device