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Novel multiplexer, latch, and shift register in QCA nanotechnology for high-speed computing systems

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Abstract

The current research goal is set to provide efficient design and a practical arrangement of the multiplexer, D-latch, and shift register in the quantum-dot cellular automata (QCA) technology. In the proposed multiplexer, including 14 cells, an area of 0.01 \({\mu {\text{m}}}^{2}\), a 0.5 clock cycle delay, and an energy consumption of 17.31 \({\text{meV}}\), the number of cells and energy consumption rates are reduced by 6.66 and 7.53% compared to the previous designs. Also, a D-latch is designed in this paper using the proposed multiplexer, which has been improved dramatically compared to the previously proposed methods. The proposed D-latch with 24 cells, an area of 0.02 \({\mu {\text{m}}}^{2}\), a 0.5 clock cycle delay, and energy consumption of 26.18 \({\text{meV}}\) reduced the delay and energy consumption rates, respectively, by 50 and 16.14% in comparison with the best previous designs. The reset and set terminals are also added to the proposed D-latch. The designed D-latches were used in a 4-bit shift register to demonstrate their accurate functioning in more complicated circuits. Accordingly, a 14.28% delay rate reduction resulted. Also, the proposed shift register contains 149 cells, an area of 0.11 \({\mu {\text{m}}}^{2}\), a 1.5 clock cycle delay, and an energy consumption of 156.05 \({\text{meV}}\). The simulation of the proposed circuits was made by QCADesigner and QCAPro tools.

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This manuscript has associated data in a data repository. The data that support the findings of this study are available on request from the corresponding author.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Nour Branch, Islamic Azad University, Nour, 4641859557, Iran

    Anahita Alghosi, Seyed Saleh Ghoreishi & Habib Adarang

  2. Department of Electrical Engineering, Faculty of Engineering and Technology, University of Mazandaran, Babolsar, Iran

    Mohammad Gholami

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  1. Anahita Alghosi
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Contributions

Anahita Alghosi performed conceptualization, methodology, software, validation, formal analysis, investigation, resources, writing—original draft, and visualization. Mohammad Gholami provided conceptualization, methodology, investigation, resources, writing—review & editing, and supervision. Seyed Saleh Ghoreishi analyzed conceptualization, methodology, investigation, writing—review & editing, and supervision. Habib Adarang presented conceptualization, methodology, investigation, writing—review & editing, and supervision.

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Correspondence to Mohammad Gholami.

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Alghosi, A., Gholami, M., Ghoreishi, S.S. et al. Novel multiplexer, latch, and shift register in QCA nanotechnology for high-speed computing systems. Eur. Phys. J. Plus 139, 266 (2024). https://doi.org/10.1140/epjp/s13360-024-05060-y

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