New modified-majority voter-based efficient QCA digital logic design |
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Authors: | Ali Newaz Bahar Firdous Ahmad Shahjahan Wani Safina Al-Nisa Ghulam Mohiuddin Bhat |
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Affiliation: | 1. Information and Communication Technology, Mawlana Bhashani Science and Technology University, Tangail, Bangladeshbahar_mitdu@yahoo.com;3. Department of Electronic Science, Cluster University, S. P College, Srinagar, India;4. Department of Computer Science, Cluster University, S.P College, Srinagar, India;5. Department of Electrical and Electronics, Government College of Engineering and Technology, Safapora, India;6. University of Kashmir, Institute of Technology (IOT), Srinagar, India |
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Abstract: | ABSTRACTQuantum-dot cellular automata (QCA) is an emerging nanotechnology and a possible alternative solution to the limitation of complementary metal oxide semiconductor (CMOS) technology. One of the most attractive fields in QCA is the implementation of configurable digital systems. This article presents a novel multifunctional gate called the modified-majority voter (MMV). The proposed gate works on the explicit interaction of the cell characteristic property for the implementation of digital circuits. This prominent feature of the proposed gate reduces the maximum hardware cost and implements highly efficient QCA structures. To verify the functionality of the proposed gate, some physical proofs, truth table and computational simulation results are performed. These results assured the validity of the existence of the proposed gate. It also dissipates less energy which has been calculated under three separate tunnelling energy levels using the QCAPro tool. To prove the effectiveness of the proposed MMV gate, several optimal irreversible arithmetic circuits such as three-input XOR, half-adder and full-adder are proposed. The modular layouts are verified with the freely available QCADesigner tool version 2.0.3. |
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Keywords: | QCA modified-majority voter (MMV) three-input XOR QCA adder QCADesigner QCAPro |
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