Bi-Directional Barrel Shifter Using Reversible Gates

The key objective of today’s circuit design is to increase the performance by reducing the number of gates involved in the design of a barrel shifter. Data shifting is required in many key computer operations from address decoding to computer arithmetic. Full barrel shifters are often on the critical path, which has led most research to be directed toward speed optimizations. Appropriate theorems and algorithms are presented to clarify the proposed designs. The contribution of this paper will engender a new thread of research in the field of reversible circuits. To know parameters like power and area the schematics of barrel shifters are designed and drawn in Microwind to calculate the parameters and the results are compared and presented. A new design of barrel shifter using Modified Fredkin gate is analyzed in Microwind which resulted in reduced power when compared to the previous designs. For this reason, this paper presents an efficient design of a reversible bi-directional barrel shifter.