Work place: Nanotechnology and Quantum Computing Laboratory, Shahid Beheshti University, G. C., Tehran, Iran
E-mail: sh_sheikhfaal@ymail.com
Website:
Research Interests: Computational Engineering, Computer systems and computational processes, Computer Architecture and Organization, Computer Networks
Biography
Shadi Sheikhfaal received her B.Sc. in computer hardware engineering from Ardabil Branch of IAU, Ardabil, Iran in 2012 and her M.Sc. in computer engineering, computer architecture from Science and Research branch, IAU (East Azarbaijan campus), Tabriz, Iran in 2014. She is currently a research assistant at School of Computer Science of IPM and NQC Lab of Shahid Beheshti University, Tehran, Iran. Her research interests include low power design and nanoelectronic circuit design with emphasis on Quantum-dot cellular automata.
Email: sh_sheikhfaal@ymail.com
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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