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In last few decades, typical lithography based VLSI technology used to improve higher scale integration, low switching speed and low powered computing of semiconductor constituents. However, this trend meets severe challenges of tunneling , short-channel effects and leakage current. Quantum-dot Cellular Automata (QCA) is one of the promising substitutions to traditional semiconductor-based technology which proposed a unique scheme of information transmutation as well as computation. QCA hold the assurance of rapid speeds, higher switching frequency, highly scalable feature and notably reduced sizes. In this paper, an efficient layout of fredkin gate is proposed based on QCA and CMOS technology which lessened total covered area, the number of cell and clock, latency time and number of coplanar wire crossing compared with the earlier design also the VHSIC Hardware Description Language (VHDL) of proposed fredkin gate is presented. For simulating and confirming the proposed circuit QCADesigner and Microwindlite, familiar verification and simulation tools has been occupied. The proposed design has a promising prospective in the organizing of nanoscale low power exhausting information processing system and can stimulate complex digital applications in QCA.
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