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Reseach Article
Article:Realization of a Novel Reversible SCG Gate and its Application for Designing Parallel Adder/Subtractor and Match Logic
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 31 - Number 9 |
| Year of Publication: 2011 |
| Authors: Diganta Sengupta, Mahamuda Sultana, Atal Chaudhuri |
10.5120/3854-5372
|
Diganta Sengupta, Mahamuda Sultana, Atal Chaudhuri . Article:Realization of a Novel Reversible SCG Gate and its Application for Designing Parallel Adder/Subtractor and Match Logic. International Journal of Computer Applications. 31, 9 ( October 2011), 30-35. DOI=10.5120/3854-5372
Abstract
In recent years, Quantum Electronics and Reversible Logic have emerged as a major area of research having applications in low power CMOS circuits, cryptography, optical computing and nanotechnology. The fact that classical logic gates such as AND, OR, XOR etc., barring the NOT gate, cannot predict the input given the output and hence generate heat due to information loss, has given rise to the concept of reversible logic. In this paper, a new reversible 4 * 4 “SCG” gate has been proposed which is being used to realize the classical set of logic gates in the reversible domain. The most promising fact of the proposed gate is that a single SCG gate can be used to realize a reversible Full Adder/Subtractor circuit or a single bit reversible Comparator. It has been shown that the Full Adder/Subtractor and the single bit Comparator using the proposed gate is much better and optimized in terms of number of garbage outputs and the number of reversible gates used in comparison to the existing counterparts in literature. Further efficient Reversible Parallel Adder/Subtractor circuits and Match Logic have been designed using the proposed SCG gate. Also a 4-bit digital comparator has been designed by cascading a series of single bit comparators using SCG gate.
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