Abstract

Abstract: TheNew Technology is quantum dot cellular automata was developed at Nanoscalelevel, which required less area by utilizing quantum cells compared to CMOStechnology thus it consumes low power. The CMOS based Transistors can reducetheir channel width at only certain levels than their present size .The QCAapproach tends to one of the best arrangements in beating this physical widthand channel width at molecular level. We can perform any Digital LogicFunction, with the avail of QCA based majority gates. In this paper fast adderslike Ripple carry adders(RCA) Ripple carry subtractors and Array multipliers ofN-bit size operations are performed by utilizing Majority gates that has allbest in class contenders and accomplishes the best area-delay tradeoff, delay(speed), power utilization and PDP.

Keywords - Adders, quantum-dot cellular automata (QCA),Delay, power consumption, Majority gates (MG)