Saeid Azimi

Work place: Faculty of Computer and Information Technology Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran

E-mail: s.azimi@qiau.ac.ir

Website:

Research Interests: Computational Science and Engineering, Computer systems and computational processes, Computer Architecture and Organization, Engineering

Biography

Saeid Azimi received his B.Sc. degree in Computer Engineering at Islamic Azad University South Tehran Branch in 2013. He started M.Sc. degree in Computer Architecture at Islamic Azad University of Qazvin from 2013. He is research assistant at Computer Engineering, Islamic Azad University of Qazvin, Qazvin, Iran. His research interests include on High Speed Low Power VLSI Circuit Design, Emerging Technologies, mainly on Carbon Nanotube (CNT) and Quantum-dot Cellular Automata (QCA).
Email: s.azimi@qiau.ac.ir

Author Articles
Designing Counter Using Inherent Capability of Quantum-dot Cellular Automata Loops

By Soheil Sarmadi Saeid Azimi Shadi Sheikhfaal Shaahin Angizi

DOI: https://doi.org/10.5815/ijmecs.2015.09.03, Pub. Date: 8 Sep. 2015

Quantum-dot cellular automata presents a promising Nano-scale technology for replacement of conventional CMOS-based circuits. According to the significant role of counters in computing units, designing diverse types of counter circuits has attracted many attentions, so far. This paper presents a QCA-compatible single layer architecture for 4-bit counter circuit, however by generalizing the main idea, n-bit counter can be engendered in a similar way. The proposed circuit is designed without employing conventional flip-flops’ structures by allotting the distinct clock cycles to each counting unit. The comparison results with the best-reported structure reveal the superiority of our design in terms of circuit complexity and required layers for accessing to input and output cells. The proper output waveforms obtained by the QCADesigner tool proves the precise functionality of the proposed counter.

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