Analysis of Reversible Logic Gates

— In the past few years reversible logic functions has emerged as an important research area. Other fields such as low power design, optical computing and quantum computing benefit directly from achieved improvements. Reversible logic has become one of the most promising research areas in the past few decades and has found its applications in several technologies; such as low power CMOS, nanotechnology, cryptography, digital signal processing and optical computing. Implementing the reversible logic has the advantages of reducing quantum cost and the number of garbage outputs. The purpose of this paper is to give a frame of reference, understanding and overview of reversible gates. In this paper various logic gates and its applicability on logic design have been discussed. A reversible circuit connects reversible gates without fan-outs and loops. Therefore, such circuits contain equal numbers of input and output wires, each going through an entire circuit. Reversible logic is gaining interest of many researchers due to its low power dissipating characteristic.