Design of an ultra-efficient reversible full adder-subtractor in quantum-dot cellular automata

被引:39
|
作者
Taherkhani, Elham [1 ]
Moaiyeri, Mohammad Hossein [1 ,2 ]
Angizi, Shaahin [3 ]
机构
[1] Shahid Beheshti Univ, Nanotechnol & Quantum Comp Lab, GC, Tehran 1983963113, Iran
[2] Shahid Beheshti Univ, Dept Elect Engn, GC, Tehran 1983963113, Iran
[3] Univ Cent Florida, Dept Elect & Comp Engn, Orlando, FL 32816 USA
来源
OPTIK | 2017年 / 142卷
关键词
Quantum-dot cellular automata; Reversible computing; Full adder design; Single layer circuit; Energy dissipation analysis; DISSIPATION; CIRCUITS;
D O I
10.1016/j.ijleo.2017.06.024
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
By the progressive scaling of the feature size and power consumption in VLSI chips the part of energy dissipated due to information loss in irreversible computations will become a serious limitation in the near future. Quantum-dot cellular automata (QCA) is an emerging nanotechnology with extremely low energy dissipation which facilitates new computation paradigms such as reversible computing. In this paper a novel reversible full adder-subtractor circuit based on QCA is proposed. Our proposed design is implemented using only one layer and does not require any rotated cells which significantly improves the manufacturability of the design. In addition, it improves the cell count, area and total energy dissipation by almost 45% and 50% and 48%, respectively, as compared to the existing QCA-based single-layer and multilayer reversible full adders. (C) 2017 Elsevier GmbH. All rights reserved.
引用
收藏
页码:557 / 563
页数:7
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