AN EFFICIENT DESIGN OF 1 BIT ARITHMETIC LOGIC UNIT IN QUANTUM DOT CELLULAR AUTOMATA

Abstract

Quantum cellular automata (QCA) is an attractive emerging technology that takes advantage of quantum effects, which become increasingly apparent at the scale of a few nanometers. Previous work has shown that QCA has several novel features not available with conventional FET-based circuits. We describe the design of 1-bit Arithmetic Logic Unit based on combinational circuits which reduces the required hard-ware complexity and allows for reasonable simulation times. Our aim is to provide evidence that QCA has potential applications in future computers provided that the underlying technology is made feasible. The 1-bit Arithmetic logic unit (ALU) consist arithmetic unit, logical unit and full adder are major blocks of ALU. The design of ALU is successfully implemented using QCADesigner tool and also verified the simulation result of 1-bit ALU.