Research On The Technique Of Implementation Of Memristor-Based Logic Gates

As the basic component of digital circuit,the memristor-based logic gates have the advantages of small size,low energy consumption and so on.This paper mainly researches on the technique of implementation of memristor-based logical gates.The main contents of this paper are organized as follows:In Chapter 1,the development of memristor is studied.In Chapter 2,the thesis introduces some theoretical knowledge of memristor and elaborates its basic concepts and principles.Based on the analysis of the memristor model of HP laboratory,the general definition of memristor and its unique behavior of hysteretic current-voltage is researched.Next,several models of memristor are researched.Besides,this paper focuses on the threshold adaptive memristor model,which lays the foundation for the realization of the logic gate.In Chapter 3,researches on the memristor-based material implication is carried out.Taking consideration of the speed and stability of the circuit,this paper analyzes the problem of the constraint on the circuit parameters.Next,according to the relationship between material implication and Boolean function,the method to build basic AND-OR-INVERT gate through the imply gate is researched,and a design case is simulated based on the IMPLY NAND gate.Through the study of IMPLY,we found that the driving voltage program is very complex.In Chapter 4,the paper emphasizes on the research of the memristor-aided logic.Unlike the IMPLY logic gate,MAGIC gate is driven by an unchanged voltage.The memristors are connected by different ways to implement logic operation.The problem of complex driving voltage of IMPLY gates is solved effectively.First of all,the principle of MAGIC gate is researched.Secondly,according to the different logic truth tables and memristor's characteristic,the basic logic gates are designed,including AND gate,NAND gate,OR gate,NOR gate and NOT gate.Moreover,detailed analysis for different logic gates is carried out.Finally,the performance of the NOR gate and NAND gate are analyzed through the simulation.In addition,this chapter puts forward another method OR gate on the basis of AND gate.In Chapter 5,MAGIC gate family is short of XOR gate,which can not be constructed by existing MAGIC logic gates.It is different from traditional logic gates.In order to solve the problem,the paper focuses on exploring the circuit design of XOR gate and proposes two design methods of XOR gate.The feasibility of the circuit design scheme is analyzed theoretically,and the range of the circuit parameters is analyzed in detail.On the basis of theoretical research,the XOR gate based on IMPLY and MAGIC are simulated respectively by virtuoso.The results show that the proposed XOR gate has superiority with fewer devices and simpler voltage sequence.Finally,the problem of XOR gate is analyzed.