Design of Quantum-Dot Cellular Automata Circuits Using Five-Input Majority Gate

Quantum-Dot Cellular Automata (QCA) is a burgeoning technology at the nano-scale range, with the potential for smaller size, faster speed and lower power consumption than conventional CMOS-based technology. A novel full adder has been proposed using five-input majority gate in QCA in this paper, also a new carry flow adder (CFA) and a new carry delay multiplier (CDM) have been implemented based on the novel full adder. Those designs have been compared with the best previous results to our knowledge. The simulation results show that the logic functions of the designed circuits are correct by QCA Designer with better performances. Furthermore, the defect-tolerance and probabilistic transfer matrix (PTM) are used to analyze the proposed five-input majority gate and the reliability of proposed schematic full adder, respectively.