Logic circuit and operating method thereof

Abstract

The invention discloses a logic circuit and an operating method thereof. The logic circuit comprises a resistive switching unit and a field effect transistor, wherein the positive electrode of the resistive switching unit is used as a first input terminal, the negative electrode of the resistive switching unit is connected with the drain of the field effect transistor to act as a cascade terminal,the gate of the resistive switching unit is used as a second input terminal, and the source of the field effect transistor is used as a ground terminal; the first input terminal is used to apply a logic operating voltage; the cascade terminal is used for an external circuit; the second input terminal is used to apply a logic input voltage signal; and the ground terminal is used for grounding. When a logic operation is performed, a Set voltage is applied to the positive electrode of the resistive switching unit, the source of the field effect transistor is grounded, the gate of the field effect transistor is connected with an input signal, the initial resistance state of the resistive switching unit is used as another input, and thus an IMP logic function can be realized; and various logicoperations such as NAND can be completed in the structure through multiple steps of repetitive operations or the external circuit. The scheme of the invention can realize a variety of logic functions, and is also simple to operate and easy to control.

Description

technical field [0001] The invention belongs to the field of digital circuits, and more specifically relates to a logic circuit and an operation method thereof. Background technique [0002] Memristor is considered as the fourth basic circuit element besides resistors, capacitors, and inductors. It can memorize the amount of charge flowing through it, and its resistance value can be changed by controlling the change of current. The high-resistance state and low-resistance state of memristor can be used to store "0" and "1" for information storage, and has the advantages of non-volatility, low power consumption, high speed, and high integration. In addition, memristors have also been proposed to implement logic operations. For logic operations in traditional CMOS logic gate circuits, the carriers of both input and output signals are voltages, which cannot be stored in real time and are volatile when power-off; and because both input signals are voltages, there is a risk of c...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of the prior art, the purpose of the present invention is to provide a logic circuit and its operation method, aiming to solve the problem of high bit error rate of logic calculation caused by competition risk in the traditional logic gate circuit, and the existing memristor-based In the cascading process of the logic gate circuit of the device, the conversion circuit is frequently used, resulting in high computational complexity and high circuit power consumption.

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