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arXiv · 1008.3352

Variable Block Carry Skip Logic using Reversible Gates

Md. Rafiqul Islam·Md. Saiful Islam·Muhammad Rezaul Karim·Abdullah Al Mahmud·Hafiz Md. Hasan Babu
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Abstract

Reversible circuits have applications in digital signal processing, computer graphics, quantum computation and cryptography. In this paper, a generalized k*k reversible gate family is proposed and a 3*3 gate of the family is discussed. Inverter, AND, OR, NAND, NOR, and EXOR gates can be realized by this gate. Implementation of a full-adder circuit using two such 3*3 gates is given. This full-adder circuit contains only two reversible gates and produces no extra garbage outputs. The proposed full-adder circuit is efficient in terms of gate count, garbage outputs and quantum cost. A 4-bit carry skip adder is designed using this full-adder circuit and a variable block carry skip adder is discussed. Necessary equations required to evaluate these adder are presented.

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Md. Rafiqul Islam, Md. Saiful Islam, Muhammad Rezaul Karim, Abdullah Al Mahmud, Hafiz Md. Hasan Babu. 2010-08-19. Variable Block Carry Skip Logic using Reversible Gates. https://arxiv.org/abs/1008.3352

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