Realization and Synthesis of Ring Counter and Twisted Ring Counter Using Reversible Logical Computation with Minimum Quantum Cost

摘要

) having `n' inputs and `m' outputs is said to be logically reversible when its corresponding number of inputs are equal to the number of outputs(i.e. n=m) and when its input pattern uniquely maps the output pattern. Logical reversible computation has its applications in various fields like Quantum Computing, Optical Computing, low power VLSI etc., Logical reversibility has gained essence in recent years largely due to its property of low power consumption and low heat dissipation. In this paper, shift registers like shift right register and shift left register which has less heat dissipation and low power consumption is proposed. Till to date shift counters are not yet designed using reversible logic. In this paper an attempt is made to design shift counters like ring counter and Johnson ring counter using reversible logic. The designed circuit are analysed in terms of quantum cost, garbage outputs and number of gates. The Circuits had been designed and simulated using Xilinx software.