Design and Simulation of a Novel Cell Interaction Based Square Calculator in Quantum-Dot Cellular Automata

Abstract

In comparison to complementary metal oxide semiconductor (CMOS), quantum-dot cellular automata (QCA) is an efficient nano-scale method for constructing circuits. Innovative digital automation uses relatively low power and is constantly working to boost density. A square calculator is a crucial element in many different digital circuits. In this paper a highly effective and simpler two-bits and four- bits square calculator is created using the QCADesigner modelling environment. The proposed structure of 2-bits square calculator contains only 32 cells (50% less compared to the existing work) and occupied only 0.03μm2 area. It has an area usage of 34.56% and the latency of the circuit is 0.5-clock cycles. The proposed 4-bits square calculator contains a total cell count of 370 cells (35% less than the existing work) and it occupies an area of 0.67 μm2 with an area utilization of 17.89% and a latency of 1.25-clock cycles. The simulation findings showed that the proposed design is very efficient in terms of cell count, area and delay.