Optimized Design of Multiplexor by Quantum-dot Cellular Automata (original) (raw)
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A novel architecture for quantum-dot cellular automata multiplexer
Quantum-dot Cellular Automata (QCA) technology is attractive due to its low power consumption, fast speed and small dimension; therefore it is a promising alternative to CMOS technology. Additionally, multiplexer is a useful part in many important circuits. In this paper we propose a novel design of 2:1 MUX in QCA. Moreover, a 4:1 multiplexer, an XOR gate and a latch are proposed based on our 2:1 multiplexer design. The simulation results have been verified using the QCADesigner.
An Efficient and Optimized Multiplexer Design for Quantum-Dot Cellular Automata
Journal of Computational and Theoretical Nanoscience, 2014
Quantum-dot cellular automata (QCA) is currently being investigated as an emerging alternative to conventional silicon MOSFET technology. In this paper, an efficient and optimized 4 to 1 multiplexer design for implementation in QCA is presented. The aim is to maximize the circuit density and also to focus on the layout that is to be minimal in terms of number of cells and delay. The proposed 4 to 1 multiplexer is designed using 5-input majority gate and a 4-input AND/OR gate. For verifying the functionality of the circuit, the proposed layout is simulated using QCADesigner software. The proposed design is compared with the other previous works. The results show that our design has minimal size and cell count, and it is implemented with only four clock phases. Also we have compared the proposed QCA design with conventional CMOS technology. The results confirm that the QCA design is more efficient in terms of area and clock frequency.
Optimum multiplexer design in quantum-dot cellular automata
Indonesian Journal of Electrical Engineering and Computer Science
Quantum-dot Cellular Automata (QCA) is one of the most important computing technologies for the future and will be the alternative candidate for current CMOS technology. QCA is attracting a lot of researchers due to many features such as high speed, small size, and low power consumption. QCA has two main building blocks (majority gate and inverter) used for design any Boolean function. QCA also has an inherent capability that used to design many important gates such as XOR and Multiplexer in optimal form without following any Boolean function. This paper presents a novel design 2:1 QCA-Multiplexer in two forms. The proposed design is very simple, highly efficient and can be used to produce many logical functions. The proposed design output comes from the inherent capabilities of quantum technology. New 4:1 QCA-Multiplexer has been built using the proposed structure. The output waveforms showed the wonderful performance of the proposed design in terms of the number of cells, area, an...
Design and implementation reversible multiplexer using quantum-dot cellular automata approach
Bulletin of Electrical Engineering and Informatics, 2022
Rapid progress in the field of nanotechnology includes using quantum dotcellular automata (QCA) as a replacement for conventional transistor-based complementary metal oxide semiconductor (CMOS) circuits in the construction of nano-circuits. Due to ultra low thermal dissipation, rapid clocking, and extremely high density, the QCA is a rapidly growing field in the nanotechnological field to inhibit the field effect transistor (FET)-based circuit. This paper discusses and evaluates two multiplexer (MUX) architectures: an innovative and effective 4×1 MUX structure and an 8×1 MUX structures using QCA technology. The suggested architectural designs are constructed using the Fredkin and controlled-NOT (CNOT) gates. These constructions were designed to simulate using tool QCA designer 2.0.3. The 591 and 1,615 cells would be used by the 4×1 and 8×1 QCA MUX architectures, respectively. The simulation results demonstrate that, when compared to the previous QCA MUX structures, the suggested QCA MUX designs have the best clock latency performance and use of different gate types.
International Journal of Modern Education and Computer Science, 2016
Quantum-Dot Cellular Automata (QCA) is a radical technology, which works at Nanoscale. Due to its numerous advantages over the conventional CMOS-based digital circuits, researchers are now concentrating more on designing digital circuits using this technology. Researchers have reported various findings in this field till now. In this paper, a modular 2:1 Multiplexer has been designed followed by its application in the designing of 1-bit parallel memory. A 4:1 MUX is designed using cascading of two 2:1 multiplexers. This paper also incorporates a comparative analysis of the proposed circuits with some previous designs. This comparison indicates that the designed Multiplexer is showing a considerable reduction in cell count as well as in the area. Here the design and simulation of the circuits are done using QCA Designer Ver. 1.40. Power dissipation simulation analysis of the designed 4:1 multiplexer is also done using QCA Pro tool.
A Review on QCA Multiplexer Designs
Quantum-dot Cellular Automata (QCA), is a contemporary nanotechnology for manufacturing logical circuits which brings less power consumption, smaller circuit size, and faster operation. In this technology, logical gates are composed of nano-scale basic components called cells. Each cell consists of four quantum-dot arranged in a square pattern. Diagonal arrangement of two extra electrons resembles two logical states 0 and 1. Majority gate and inverter gate are considered as the two most fundamental building blocks of QCA. The effect of cells on their neighbor cells enables designing more diverse circuits. Multiplexer is a key component in most computer circuits. Researchers have presented various QCA designs for multiplexers since the introduction of QCA. In this research all presented designs are simulated in QCA Designer tool version 2.0.3 and investigated from different aspects such as complexity, occupied area, types of components used in circuit, number of layers, and delay.
A Novel Optimized Multiplexer Design in Quantum-Dot Cellular Automata
International Journal for Research in Applied Science and Engineering Technology, 2017
Molecular quantum-dot cellular automata (QCA) is an emerging nanocomputing paradigm, which operates on electrostatic repulsion phenomena between two electrons to keep those apart at the maximum distance to a rest position for obtaining the highest finding probability. In the field of Quantum-dot Cellular Automata the digital logic gate approaches nearly about to nanometer in scale. In QCA quantum gates operate by the tunneling effect of electrons from one quantum dot to another dot through revealing its wave nature. The operating speed of the device gains the speed of light because the quantum tunneling occurs at the light speed. This paper compares two methodologies of quantum logic gate designing, those are universal T gate designing and conventional gate designing practice. One 22 cells 2x1 MUX is proposed which is designed by conventional method, that provides 20.35% optimization in area occupancy compared to the best reported designs. Furthermore, one 11 cells 2:1 MUX layout is proposed which achieves 33.33% area reduction compared to the best ever multiplexer designed in QCA technology.
A novel QCA multiplexer design
2008 International Symposium on Telecommunications, 2008
Quantum-dot Cellular Automata is a novel nanotechnology that promises extra low-power, extremely dense and high speed structure for construction of logical circuits at a nano-scale. Moreover, multiplexer is a useful component for the design of many important circuits. This paper proposes a novel and efficient design of 2:1 multiplexer in the QCA. The proposed multiplexer has been compared to few recent designs in terms of area, speed and complexity. Comparison of results illustrates significant improvements in our design as compared to traditional approaches. Also, simulation proves that the proposed multiplexer design is completely robust and more sustainable to high input frequency, as compared to other designs. Simulations have been carried out using the QCA Designer, a layout and simulation tool for QCA.
Design of various Logic gates and Multiplexer in QCA
2014
As transistors decrease in size more and more of them can be accommodated in a single die, thus increasing chip computational capabilities. However, transistors cannot get much smaller than their current size. The Quantum-dot Cellular Automata (QCA) approach represents one of the possible solutions in overcoming this physical limit. Quantum-dot Cellular Automata (QCA) is a novel nanotechnology that promises smaller size, lower power consumption, with faster speed and is considered as a solution to the scaling problems in complementary metal oxide semiconductor technology. This paper presents the Novel design of various Logic gates and Multiplexer with less cell count and area when compared to recent existing designs. Index Terms Quantum-dot Cellular Automata (QCA), Multiplexer, Logic Gates.
Efficient Design of 2:1 MUX Multiplexer using Nanotechnology Based on QCA
International Journal of Trend in Scientific Research and Development
Quantum Dot Cellular Automata is a new technology which overcomes of the of CMOS limitations. It is an novel advanced nano-technology that revolves the single-electron position control. It is one of the most efficient and emerging nano-technology which mainly deals with the effect of electrons inside the quantum dots in QCA cell, and it is the best alternative technology in the nano-electronics architectural field. In this paper, we designed a 2:1 Multiplexer, which is more efficient in the term of area and cells to the other designs.