DNA Logic Gates to Design Half Adder

Abstract

The DNA molecule is indubitably the most powerful medium known for data storage and processing. But till now, DNA molecule has found little use in computing applications. For initiating computing application with DNA molecule, it requires to design DNA transistors which can be utilized to design basic gates to implement Boolean logic. Interestingly some recent researches have shown that it is very much possible to design a three terminal transistor like device architecture by controlling the flow of RNA polymerase along DNA with specific integrases. Along with that, very recently, fundamental experimental designs for realizing various basic Boolean logic functions have been demonstrated successfully with DNA molecule. Present work adopted, modified and extended such DNA logic gate concept to execute design simulation of a half adder circuit. The timing diagram for sum, carry, input and output has been simulated and results have been presented. With present research, it has been established that such DNA logic gate concept can be extended to complex circuits. At the same time, it has been also predicted that with the development of proper mathematical model for DNA transistor, a circuit simulator can be designed for designing and simulating bioelectronics circuit in near future.