Design of novel multiplexer circuits in QCA nanocomputing

Abstract

Quantum-dot Cellular Automata (QCA) technology is a promising alternative nano-scale technology for CMOS technology. In digital circuits, a multiplexer is one of the most important components. In this study, an efficient and single layer 2 to 1 QCA multiplexer circuit is proposed using majority gate and inverter gate. In addition, efficient 4 to 1 and 8 to 1 QCA multiplexer circuits are implemented using this 2 to 1 multiplexer circuit. The developed multiplexer circuits are implemented in QCADesigner tool. According to the results, the developed 2 to 1, 4 to 1, and 8 to 1 multiplexer circuits utilize 16 (0.01?m2), 96 (0.11?m2), and 286 (0.43?m2) QCA cell (area). The results demonstrate that the proposed 8 to 1 multiplexer circuit reduces the cost by about 25%- 99% compared to the existing multiplexer circuits.

Design and implementation reversible multiplexer using quantum-dot cellular automata approach

“…Many QCA cells make up the QCA wires, which can be utilized to transmit input cell polarization. Two collections of QCA wire are possible: i) single-layer crossing wires; ii) multiple-layer crossing wires [12]. In QCA circuits, two wire types 90 degree and 45 degrees are used.…”

QCA Based Design of Novel Low Power n-bit Ripple Carry Incrementer and Ripple Carry Decrementer

“…An alternative to CMOS is essential for scaling down the device and escalating the efficiency of a microprocessor. Lent et al Suggested QCA [1] technology as a substitute for CMOS.QCA [2][3][4] emerged as a rising technology to encode information. QCA is transistor-less, very low-power nanotechnology.…”

“…The addition and multiplication of two binary integers is an essential and widely used mathematical operation in highperformance systems such as microprocessors, DSPs, etc. A proficient coplanar 1-cycle comparator circuit [3] is proposed and assessed in the QCA. A majority gate, XNOR gate, and inverter are employed to build the QCA comparator circuit.…”