A unique three-layer full adder in quantum-dot cellular automata. (September 2020)

• Record Type: Journal Article
• Authors: Heikalabad, Saeed Rasouli; Salimzadeh, Fereshteh; Barughi, Yashar Zirak
• Is Part Of: Computers & electrical engineering. Volume 86(2020)
• Publication Date: 2020-09
• Subjects: Nanotechnology -- Quantum-dot cellular automata -- Three-layer structure -- Full-adder; Computer engineering -- Periodicals; Electrical engineering -- Periodicals; Electrical engineering -- Data processing -- Periodicals; Ordinateurs -- Conception et construction -- Périodiques; Électrotechnique -- Périodiques; Électrotechnique -- Informatique -- Périodiques; Computer engineering; Electrical engineering; Electrical engineering -- Data processing; Periodicals; Electronic journals; 621.302854
• DOI: 10.1016/j.compeleceng.2020.106735
• Languages: English
• ISSNs: 0045-7906

Abstract

Highlights: An overview about basic features of QCA is presented. The elementary components of QCA circuits are explained. A new structure for single-bit full adder is designed using the three-input XOR gate and three-input majority gate in three-layer. Simulation results of the proposed structure are verified using QCADesigner version 2.0.3. Abstract: Unlike previous technologies, QCA does not depend on the movement of electrons in the wire to transmit information. This feature significantly improves the speed of the circuits and reduces the power consumption, which is a great incentive for digital circuit designers to use this technology. In this paper, a new structure of full-adder is proposed, designed, implemented and simulated using two gates that improve the complexity and latency compared to previous designs. Simulation results are obtained using QCADesigner which illustrates the valid performance of the proposed design. The proposed structure has a 30% improvement in the number of cells and a 41% improvement in the occupied area. Graphical abstract: Image, graphical abstract