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A Unique Reversible Gate in Quantum-dot Cellular Automata for Implementation of Four Flip-flops Without Garbage Outputs

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Abstract

In this paper, a unique gate is presented for the design of reversible flip-flops in quantum-dot cellular automata technology. The proposed gate is implemented with multiplexer, three-input Majority gate and XOR gate. The proposed gate has four input lines and four output lines. This gate is designed without garbage outputs. In other words, each output determines the function of each of flip-flops. The proposed structure is evaluated by the QCADesigner. The result of the simulation represents that the operations of the proposed structure is as expected and all functions are correct. Also, the evaluation results show that the proposed structure has significant improvement in area, cell numbers and delay compared to the previous structures. QCAPro tool is used to estimate energy consumption of the proposed structure.

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Authors and Affiliations

  1. Department of Computer Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran

    Saeedeh Kamrani & Saeed Rasouli Heikalabad

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  1. Saeedeh Kamrani
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  2. Saeed Rasouli Heikalabad
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Correspondence to Saeed Rasouli Heikalabad.

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Kamrani, S., Heikalabad, S.R. A Unique Reversible Gate in Quantum-dot Cellular Automata for Implementation of Four Flip-flops Without Garbage Outputs. Int J Theor Phys 57, 3340–3358 (2018). https://doi.org/10.1007/s10773-018-3847-7

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  • DOI: https://doi.org/10.1007/s10773-018-3847-7

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