Implementation of parallel adders using area efficient quantum dot cellular automata full adder

Abstract

An area efficient parallel adders using coplanar wire crossover quantum dot cellular automata full adder are presented. The Quantum dot Cellular Automata (QCA) is one of the emerging nano-electronic technologies for the possible alternative to current transistor based technologies, to overcome the scaling limitations of CMOS technology at nano-scale. A novel coplanar wire crossover based full adder is designed using three majority gates and two corner based inverters for the area optimization. The results obtained in the QCA implementation are reduced the area by 11% and QCA cell count by 12% in comparison with the full adder designed in [1]. QCA based parallel adders designed using optimized full adder and functional simulation is carried out using QCA designer software.