Database Application Oriented Memristor Memory Technology

The size limit of CMOS circuits and the memory wall problem are significant challenges confront the development of computer as well as the increasing of computing efficiency. The discovery of memristor--"the fourth fundamental passive element", has caused great attentions of the academic community. As the latest achievements of nano-electronics, memristor, which has the characteristics of non-volatile storage, is considered to have potential for continuing of Moore's Law for another 10-15 years; and it is also expected to design new computer architecture based on memory and logic computing fused characteristics which can improve computing efficiency, even breakthrough the memorywall problem. The thesis is based on the characteristic of memristor, and focuses on the database application oriented memristor modeling and memory/logic research. Our research and achievements are as follows:Firstly, we review the memristor modeling theory, data memory and the theory of reading and writing related to our work. We find remaining deficiencies of existing models and build a new model via theoretical analysis and comparison. For memristor characteristics, database applications are proposed.Secondly, a flux-controlled memristor model is established. Based on the dopant drift theory, we present a memristor approach with memory capacity of magnetic flux (flux-controlled) combined with existing researches. We also simulate our model in several mainstream simulation tools.It is proved that the memristor model can fit both the theory and physical test results in a wider situation. Based on the proposed model, an explicit quantitative expression of switching time can be given. We also discuss the device characteristics adapt to the structure and logic operations, and the mode of control voltages.Thirdly, the structure for memristor memory and computing is designed. Based on data applications, the designed structure can make writing, copying data implication operation and reading.Finally, for database applications,we build a database application oriented framework , and discuss the achievement with memristor in each level of database.This is the foundation for designing secure data access and maintenance of database. By sequential logic, date equal comparison and size comparison algorithm are design and simulation.