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Title: | Design of a 4-bit ripple adder using Quantum-dot Cellular Automata (QCA) | Authors: | Chan, S.T.Y. Chau, C.F. Bin Ghazali, A. |
Issue Date: | 2013 | Abstract: | Quantum-dot Cellular Automata (QCA) is one of the new emerging nanotechnologies explored as an alternative to current CMOS designs. This paper presents the fundamental concepts of QCA and QCA-based logic design. Basic QCA logic circuits such as the inverter, three-input majority gate and five-input majority gate are studied and implemented using QCADesigner. To demonstrate the practical use of using QCA in logic design, a 4-bit ripple adder using a combined concepts from the conventional RCA and CLA is proposed using 20 three-input majority gates, 4 five-input majority gates and 12 inverters. The proposed adder uses 1246 cells which resulted in an area of 1.75um × 1.43um, and a latency of 5.75 clock cycles. © 2013 IEEE. | URI: | http://dspace.uniten.edu.my/jspui/handle/123456789/8701 |
Appears in Collections: | COE Scholarly Publication |
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