School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, 230009, China
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
Quantum-dot Cellular Automata (QCA) is potentially a very attractive alternative to CMOS for future digital designs. Circuit designs in QCA have been extensively studied. QCA technology has been extensively investigated in recent years. However, only limited attention has been paid to QCA decimal arithmetic. In this paper, an efficient full adder is presented. The layout of the proposed circuit uses 30 QCA cells and a 25% improvement over the best previous design. It has significant improvements in comparison to the previous designs in terms of the number of cells, area and cost and has a similar delay to the fastest previous design. In Ripple Carry Adder (RCA) design, they also maintain high performance. And all of the multi-bit RCA also have the lowest overall cost with a reduction of over 50% when compared with the previous RCA design.
full adder, nanotechnology, quantum-dot cellular automata, ripple carry adder
This work was supported in part by the NationalNatural Science Foundation of China under Grant61271122, and in part by the Fundamental ResearchFunds for the Central Universities of China under Grant16030901007.
How to Cite
Wang, L., & Yan, J. (2019). An efficient full adder circuit design in Quantum-dot Cellular Automata technology. Advances in Computers and Electronics, 1(1), 1-7. https://doi.org/10.25082/ACE.2020.01.001
Navi K, Sayedsalehi S, Farazkish R, et al. Five-input majority gate, a new device for quantum-dot cellular automata. Journal of Computational & Theoretical Nanoscience, 2010, 7(8): 1-8. https://doi.org/10.1166/jctn.2010.1517
Tougaw PD and Lent CS. Logical devices implemented using quantum cellular automata. Journal of Applied Physics, 1994, 75(3): 1818-1825. https://doi.org/10.1063/1.356375
Mohammadi M, Mohammadi M and Gorgin S. An efficient design of full adder in quantum-dot cellular automata (qca) technology. Microelectronics Journal, 2016, 50(16): 35-43. https://doi.org/10.1016/j.mejo.2016.02.004
Labrado C and Thapliyal H. Design of adder and subtractor circuits in majority logic-based field-coupled qca nanocomputing. Electronics Letters, 2016, 52(6): 464-466. https://doi.org/10.1049/el.2015.3834
Hashemi S, Tehrani MA and Navi K. An efficient quantumdot cellular automata full-adder. Scientific Research & Essays, 2012, 7(2): 177-189.