Basic Arithmetics Based on Analog Signal with Molecular Reactions

This paper presents a design methodology to implement basic arithmetics, including addition, subtraction, multiplication and division, with molecular reactions using analog signals. Simpler than conventional digital logic, our design can still implement the same functionality. Two kinds of designs are contained, one is based on synchronous sequential logic, and the other basis is an asynchronous one. The feasibility of our method is validated via simulations of chemical kinetics.