A Novel Design for XOR Gate used for Quantum-Dot Cellular Automata (QCA) to Create a Revolution in Nanotechnology Structure

Abstract

Abstract-Novel digital technologies always lead to high density and very low power consumption. One of these concepts is Quantum-dot Cellular Automata (QCA), which is one of the new emerging nanotechnology-based on Coulomb repulsion. This article presents three architectures of logical "XOR" gate, a novel structure of two inputs "XOR" gate, which is used as a module to implement four inputs "XOR" gate and eight inputs "XOR" gate using QCA technique. The two inputs, four inputs, and eight inputs QCA "XOR" gate architectures are built using 10, 35, and 90 Cells on 0.008 µm 2 , 0.036 µm 2 and 0.114 µm 2 of areas, respectively. The proposed "XOR" gate structure provides an improvement in terms of circuit complexity, area, latency and type of cross wiring compared to other previous architectures. These proposed architectures of "XOR" gate are evaluated and simulated using the QCADesigner tool version 2.0.3.

Multioperative reversible gate design with implementation of 1‐bit full adder and subtractor along with energy dissipation analysis

“…Laajimi et al proposed a novel design for the exclusive‐OR (XOR) gate 14 . In addition, the architecture of XOR gate plays an important role in the arithmetic and logical unit (ALU) of a processor.…”

Qca Design for 4-Bit Asynchronous Down Counter

“…For designing FFs, positive level triggered and falling edge triggered approach are employed in [9] using T-FF for N-bit which offers less power. An XOR gate with 2, 4 and 8-input is designed by utilizing QCA model in [10]. It offers less complexity than existing XOR gates.…”