Publication: Design of a 4-bit ripple adder using Quantum-dot Cellular Automata (QCA)
Date
2013
Authors
Chan S.T.Y.
Chau C.F.
Bin Ghazali A.
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE Computer Society
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.
Description
Keywords
Adder , Quantum-dot cellular automata , Ripple carry adder , Logic design , Sequential machines , Sustainable development , Clock cycles , CMOS design , Fundamental concepts , Majority gates , Practical use , Quantum dot cellular automata , Ripple adders , Ripple carry adders , Adders