Abstract
Quantum-dot cellular automata (QCA) are one of the technologies suggested for implementing circuits at a Nanoscale. This technology has features such as low dissipation power, high speed, low occupation area, and high density due to the lack of electric currents in the circuit and the use of Columbus interaction to transmit information. The arithmetic logic unit (ALU) is one of the significant components of digital computing systems that can perform arithmetic and logical operations on binary data. In this paper, an efficient one-bit ALU in QCA is suggested based on a new formulation that can perform eight mathematical operations and four logical operations. Moreover, we have suggested a novel QCA full-adder and an effective 4:1 QCA multiplexer that have been used in the suggested QCA ALU. The simulation results using QCADesigner2.0.3 software showed that the suggested circuits work well.
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