Regular clocking-based Automated Cell Placement technique in QCA targeting sequential circuit

Bhowmik, Dhrubajyoti; Pramanik, Amit; Pal, Jayanta; Sen, Pinaki; Singh, Ayush Ranjan; Saha, Apu Kumar; Sen, Bibhash

doi:10.1016/j.compeleceng.2021.107668

Cited by 4 publications

(2 citation statements)

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“…In addition, the number of inputs in reversible circuits is the same as the number of outputs [2]. In contrast, complementary metal-oxide semiconductors' power efficiency and feature size (CMOS) have reached their saturation points [4]. Physical limitations, including short channel effects, ultra-thin gate oxides, power dissipation, and a costly fabrication procedure, prevent this technology from working in the future, so it is necessary to be changed it to a suitable technology like quantum-dot cellular automata (QCA).…”

Section: Introductionmentioning

confidence: 99%

“…Physical limitations, including short channel effects, ultra-thin gate oxides, power dissipation, and a costly fabrication procedure, prevent this technology from working in the future, so it is necessary to be changed it to a suitable technology like quantum-dot cellular automata (QCA). [4]. In other words, due to its area efficiency and extremely low energy consumption rate, QCA technology is receiving much attention as a viable alternative to CMOS technology [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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An Ultra-Efficient Nano-Scale Arithmetic and Logic Unit Using a New Conservative Reversible Block and Quantum-Dots

Navimipour

Ahmadpour

Yalçın

2022

Preprint

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Reversible logic has attracted significant attention recently due to its inherent ability to decrease energy dissipation, which is the primary need of low-power digital circuits. One of the newest areas of study is reversible logic, which has applications in several areas, including nanotechnology, DNA computing, quantum computing, fault tolerance, and low-power CMOS. On the other hand, Quantum-dot Cellular Automata (QCA) is one of the stunning approaches that can be used as an alternative to traditional technologies. An Arithmetic and Logic Unit (ALU) is considered for performing essential instructions such as addition, subtraction, division, multiplication, and logic operations, including OR, XOR, AND, and XNOR. In other words, ALUs perform essential functions in digital processing circuits because of their wide applications in Central Processing Units (CPUs). Accordingly, ALUs have become a necessary part of microprocessors and are extensively used to solve procedural problems more efficiently and reliably. Hence, this paper proposes an efficient ALU with low power and high speed. At first, a full adder and a 4:1 multiplexer circuit are developed using a unique reversible gate. At last, using all the suggested circuits, an ALU with four mathematical and logical operations is developed. Moreover, several physical validations are presented to confirm the functionality of the QCA gate. The simulations of the structures and power consumption analysis are performed using QCADesigner 2.0.03 and QCAPro software. The suggested ALU's consumption power under various energy ranges (0.5 Ek, 1 Ek, and 1.5 Ek) showed significant advancements from previous designs.

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Section: Introductionmentioning

confidence: 99%