Full-addition circuit composed of CMOS inverters and memristors

Abstract

The invention discloses a full-addition circuit composed of CMOS inverters and memristors. The full-addition circuit comprises four CMOS inverters, wherein the first inverter and four memristors forman XOR gate circuit, the fourth inverter and another four memristors form an XNOR gate circuit, the second inverter and the third inverter separately receive initial carry signals VCin, the upper endof the second inverter is connected to the input end of the first inverter, the lower end of the second inverter is connected to the input end of the fourth inverter, the second inverter outputs a carry signal VCout, the output end of the XOR gate circuit is connected to the upper end of the third inverter, the output end of the XNOR gate circuit is connected to the lower end of the third inverter, and the third inverter outputs a sum voltage VSum. The scheme of the invention has the effects that: according to the circuit, a logical circuit integrates computing and storage functions, logical operation steps can be greatly reduced, components required by the circuit can be simplified, the circuit costs can be further reduced, and the integration degree of the circuit can be improved.

Description

technical field [0001] The invention relates to a logic circuit composed of a memristor, in particular, a full-add circuit based on a CMOS inverter and a memristor. Background technique [0002] In 1971, some scholars proposed a fourth basic circuit element besides capacitors, inductors, and resistors based on the circuit completeness theory, calling it a memristor, and described its physical characteristics. However, the physical object of memristor has not been developed, so it has not attracted much attention from researchers. In 2008, researchers in HP Labs announced that they had developed the world's first memristor physical device, which immediately attracted widespread attention from researchers and the industry. Because of its memory characteristics and the ability to store calculation results in itself, a large number of scholars have begun to study the potential of this basic circuit element with memory characteristics in modern circuit system design, especially ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a full-add circuit based on CMOS inverters and memristors, which combines the non-volatility and logic binary properties of memristors, and realizes the integration of calculation and storage of logic circuits. , which greatly reduces the operation steps and time delay of the logic circuit, and solves the problems of many operation steps and time extension of the existing logic circuit

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