Optimized approach for reversible code converters using quantum dot cellular automata

Abstract

Reversible logic has gained importance in the present development of low-power and high-speed digital systems in nanotechnology. In this manuscript, we have introduced and optimized the reversible Binary to Gray and Gray to Binary code converters circuit using two new types of reversible gates. Two new types of 3 × 3 reversible gates, namely BG-1 gate (Binary to Gray) and GB-1 gate (Gray to Binary), have been proposed to design converter circuits without any garbage outputs. In addition, useful theorems have been developed, associated with the number of gates, garbage outputs, constant input and quantum cost of the reversible converters. The QCA Designer v2. 0. 3 tool is used for simulation to test the workability of reversible code converters. The simulation results show that the design works correctly and extracted parameters are better than the previously reported designs. Area and lower bound parameter analysis also show that the design is based on the optimized approach.