Design of basic sequential circuits using reversible logic
Rohini Hongal, S. Rajashekar, Priyatam Kumar · 2016
Reversible logic is an emerging research area. Its ability to reduce the power dissipation has made these circuits lossless circuits. Irreversible circuits or classical circuits have energy dissipation is proportional to the number of bits lost during computation. The reversible circuits do not lose information and can generate unique outputs from specified inputs and vice versa. It has application in diverse fields such as low power CMOS design, optical information processing, cryptography, quantum computation and nanotechnology. This paper proposes a reversible design of Flip Flops, Counters and Universal shift register. Universal shift register is an important memory element of the sequential circuit family. In this paper we proposed efficient design of reversible universal shift register that is optimized in terms of quantum cost, delay, garbage outputs. Each module has been coded using Verilog then simulated using Modelsim and prototyped in Xilinx-Spartan 3.