Design And Implementation Of 8-3 Priority Encoder Based On Molecular Circuit

Today,with the increasing development of traditional silicon-based computers,the development of silicon-based computers has gradually reached the limit of Moore's Law.Therefore,finding a new computing method that can replace traditional computing has become the goal pursued by more and more researchers.DNA has become one of the most promising materials for new computers because it follows the strict and precise principle of complementary base pairing.DNA strand displacement technology is one of the most important implementation methods in DNA computing.Over the years,various complex functions have been realized based on DNA strand displacement technology,such as solving NP problems and realizing handwriting recognition.This dissertation mainly uses DNA strand displacement technology to design multiple fan-in and fan-out molecular logic circuits.The main research contents are as follows:In view of the situation that large-scale DNA molecular circuits are mainly based on the two-track idea of molecular logic circuits,the whole is relatively complex,and with the increase of the number of logic gates,the number of DNA strands participating in the reaction and the reaction speed will greatly increase.In this dissertation,the switch circuit model is chosen as the model of molecular circuit,and an 8-3 priority encoder DNA molecular circuit model with8 inputs and 3 outputs is constructed.Compared with the traditional two-track molecular logic circuit,the whole model greatly reduces the number of types of DNA strands in the reaction,and has a high degree of cascadability and modularity.Then,using Visual DSD simulation software,the 8-3 priority encoder designed in this dissertation is simulated and simulated,and the logic feasibility of the molecular circuit is proved.Finally,the base sequence of each DNA strand is designed,and the 8-3 priority encoder designed in this dissertation is realized through experimental operation in the laboratory.To sum up,based on the DNA strand replacement technology,this dissertation adopts the switch circuit model to realize an 8-3 priority encoder molecular circuit with 8 inputs and 3outputs by cascading different fan-in and fan-out molecular logic gates.realize it in the room.The feasibility and accuracy of the 8-3 priority encoder designed in this dissertation are proved.The design of this dissertation has made a beneficial exploration for the future multi-input multi-output and high-level DNA molecular circuits,and also provides a certain reference for the future large-scale DNA integrated circuits.