Realization of Reversible Logic in DNA Computing

In this paper, DNA-based Toffoli gate has been modeled using the formation of DNA characteristics. After that, the logics of the basic (AND, OR, NOT) gates and EX-OR gates have been realized using our DNA-based Tofffoli gate. The proposed DNA-based Tofolli gate is faster due to parallelism and replication properties of DNA strands. The proposed gate also requires less space because of the compactness of DNA strands. Moreover, the DNA-based Tofolli gate requires low power as the formation of DNA consumes a small amount of energy. Reversible DNA-based composite logic has also been accomplished by a reversible Half-Adder circuit. Finally, a comparative study between the existing Toffoli gate and our proposed DNA-based Toffili gate has been done.