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Journal of Applied Sciences

Year: 2007 | Volume: 7 | Issue: 22 | Page No.: 3460-3468
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Authors

Mostafa Rahimi Azghadi

Omid Kavehei

Keivan Navi

Keywords

Research Article

A Novel Design for Quantum-dot Cellular Automata Cells and Full Adders

Mostafa Rahimi Azghadi
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Omid Kavehei
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Keivan Navi
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Quantum-dot Cellular Automata (QCA) is a novel and potentially attractive technology for implementing computing architectures at the nano-scale. The basic Boolean primitive in QCA is the majority gate. In this study we present a novel design for QCA cells and another possible and unconventional scheme for majority gates. By applying these items, the hardware requirements for a QCA design can be reduced and circuits can be simpler in level and gate counts. As an example, a one bit QCA adder is constructed by applying our new scheme. Beside, we prove that how our reduction method decreases gate counts and levels in comparison to the other previous methods.
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