Priority Encoder Based on DNA Strand Displacement  

作　　者：Fang WANG Xinjian ZHANG Xin CHEN Shuying LYU Congzhou CHEN Xiaolong SHI 

机构地区：[1]Institution of Computing Science and Technology,Guangzhou University,Guangzhou 510006,China [2]Beijing University of Technology,Beijing 100081,China [3]School of Computer Science,Peking University,Beijing 100871,China

出　　处：《Chinese Journal of Electronics》2024年第6期1538-1544,共7页电子学报（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2019YFA0706402);the National Natural Science Foundation of China(Grant Nos.61632002 and 62172114);the General Project of the National Natural Science Foundation of China(Grant Nos.61872399,61872166,and 61672264);the Natural Science Foundation of Guangdong Province of China(Grant No.2022A1515011468);the Funding by Science and Technology Projects in Guangzhou(Grant Nos.202201020237 and 202201020179)。

摘　　要：The slow development of traditional computing has prompted the search for new materials to replace silicon-based computers.Bio-computers,which use molecules as the basis of computation,are highly parallel and information capable,attracting a lot of attention.In this study,we designed a NAND logic gate based on the DNA strand displacement mechanism.We assembled a molecular calculation model,a 4-wire-2-wire priority encoder logic circuit,by cascading the proposed NAND gates.Different concentrations of input DNA chains were added into the system,resulting in corresponding output,through DNA hybridization and strand displacement.Therefore,it achieved the function of a priority encoder.Simulation results verify the effectiveness and accuracy of the molecular NAND logic gate and the priority coding system presented in this study.The unique point of this proposed circuit is that we cascaded only one kind of logic gate,which provides a beneficial exploration for the subsequent development of complex DNA cascade circuits and the realization of the logical coding function of information.

关 键 词：DNA strand displacement Logic circuit NAND gate Priority encoder 

分 类 号：TP38[自动化与计算机技术—计算机系统结构] Q78[自动化与计算机技术—计算机科学与技术]