A fast approximate quaternary full adder using a parallel design based on Carbon nanotube FET

International Journal of Nano Dimension

دوره 14، شماره 3، دی 2023، صفحه 267-276   

نوع مقاله: Reasearch Paper

شناسه دیجیتال (DOI): 10.22034/ijnd.2023.1988300.2224

نویسندگان

Alireza Bolourforoush¹؛ Mokhtar Mohammadi Ghanatghestani^{* 2}

¹Department of Computer Engineering, Kerman Branch, Islamic Azad University, Kerman, Iran.

²Department of Computer Engineering, Bam branch, Islamic Azad University, Bam, Iran.

چکیده

Novel design methodologies of digital circuits have been caught in the spotlight of attention as a result of the dramatic increase in available data and the requirement for data processing among which Full adder cells are significant elements in arithmetic circuits design. The use of approximate computing and Multi Value Logic (MVL) can improve computational circuit efficiency. Carbon Nano Tube Field Effect Transistors (CNTFETs) with an adjustable threshold voltage is effective in the design of MVL circuits. This paper proposes a new CNTFET-based approximate quaternary full adder to reduce the area, delay, and power consumption. The Synopsys HSPICE results obtained based on 32nm Stanford CNTFET technology showed that the proposed model had much lower average power consumption, delay, power-delay product (PDP), and size as compared to other approximate full adders.

کلیدواژه‌ها

Approximate computing؛ Critical path delay؛ Full Adder cell؛ Multi Value Logic؛ Quaternary logic

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