ABSTRACT
In the last four decades, Complementary Metal Oxide Semiconductor (CMOS) technology has achieved circuits and system with features like low power, high device density and high speed. But, heat dissipation issue affects the speed and performance in the computing. Reversible logic based circuits can overcome the problem of heat dissipation and improve the efficiency circuit and system. One of the viable implementations of reversible logic is Quantum-dot Cellular Automata (QCA) nanotechnology. Due to nano scale, occurrence of defect are present in QCA. Therefore, defect must be analyzed in QCA based circuits.
In this paper, combinational circuit, adder and substractor based on reversible logic is proposed. The proposed circuit is implemented using QCA devices Majority Voter (MV) and inverter. Further, the fault caused by multiple missing cells defect are analyzed.
