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Design of a 4-bit ripple adder using Quantum-dot Cellular Automata (QCA)

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...

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Bibliographic Details
Main Authors: Chan S.T.Y., Chau C.F., Bin Ghazali A.
Other Authors: 56022963700
Format: Conference paper
Published: IEEE Computer Society 2023
Subjects:
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
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Summary: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.

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