Design of sequential circuit using reversible logic

The reversible logic design in today´s era is attracting more interest due to its low power consumption. Reversible logic has growing importantance in low-power circuit design and high processing computing. This paper provides synthesizing reversible counter which is the new approach in designing four bit reversible asynchronous sequential circuit. This paper also proposed a reversible D flip-flop and Tflip-flop. The important reversible gates used for reversible logic synthesis are Feynman gate, Fredkin gate, TSG gate and sayem gate etc. This paper presents a basic reversible gate to build more complicated circuits. The transistorized implementation of reversible gate presented in this paper are completely reversible in nature i.e. it can perform both forward and backward computation.