基于DNA链置换的多位全减器逻辑运算

Multi-digit full subtractor logic operation based on DNA strand displacement

基于DNA链置换反应机理,通过级联反应,实现输入信号与输出信号的动态链接,进而构建多位全减器逻辑电路,将多位全减器的数字逻辑电路转化为相应的逻辑双轨电路和生化电路,用DSD软件对其进行仿真.结果表明,多位全减器正确地表达了逻辑"0"和逻辑"1"的状态,DNA链置换作为生化逻辑电路的研究方法是有效的.

Based on the reaction mechanism of DNA strand displacement,by cascade reaction,the dynamic link between input signal and output signal was realized and logic circuit of multi-digit full subtractor was constructed. Then digital logic circuit of multi-digit full subtractor is transformed into the corresponding logic double-rails circuit and biochemical circuit. Finally,the circuit was simulated in the visual DSD. The results further demonstrated that multi-digit full subtractor correctly expressed the state of logic ＂ 0 ＂ and logic ＂ 1 ＂.DNA strand displacement was an effective research method for the biological logic circuit.