PG scholar /Department of ECE

Abstract — A Number of fundamental principles of physics such as reversibility of dynamic laws is conservative logic. Conservative logic is reversible. Reversible logic is one of the emerging technologies and several researchers have focused their efforts on the design of reversible logic circuits. The design of reversible logic circuits is mostly used in Quantum Computing, Nano Technology and Low Power Digital Circuits. The number of garbage outputs and quantum cost depend upon reversible logic. Low power consumption, speed and delay are the major requirements in VLSI technology. In this paper, deals with the design of Toffoli gate based on Double edge Triggered Flipflop (DET). Toffoli gate is better than the Fredkin gate in terms of power consumption, number of gates and area. The proposed design of reversible sequential circuits using Toffoli gate are verified by using cadence simulation and the simulated results are presented