Abstract
Background: Over the last few decades, reversible logic system/circuits have received considerable attention in the diversified fields such as nanotechnology, quantum computing, cryptography, optical computing and low power design of VLSI circuits due to their low power dissipation characteristics. Methods: In this paper, we proposed the design of reversible shift register (SR) i.e. serial-in-serial out (SISO), serial-in-parallel out (SIPO), parallel-in-serial out (PISO) and parallel-in-parallel out (PIPO) SR using a reduced number of reversible logic gates and garbage output. Results: As compared to previously reported results, the improvement in our proposed model of SISO, SIPO, PISO and PIPO was found to be 50 – 66.66 %, 42.85 – 66.66 %, 12.5 – 53.33 % and 50 – 66.66 % respectively, in terms of the number of reversible logic gates.
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