Coplanar Full Adder in Quantum-Dot Cellular Automata via Clock-Zone-Based Crossover

Coplanar Full Adder in Quantum-Dot Cellular Automata via Clock-Zone-Based Crossover

Abstract—We use a coplanar QCA crossover architecture in the design of QCA full adders that leads to reduction of QCA cell count and area consumption without any latency penalty. This crossover uses non-adjacent clock zones for the two crossing wires. We further investigate the impact of these gains on carry flow QCA adders. These designs have been realized with QCA < Final Year Projects 2016 > Designer, evaluated, and tested for correctness. where the group generate and group propagate signals are realized in a straightforward manner based on QCA equivalent cells for AND and OR gates. However have efficiently used QMs in realizing group generate signals, as is reproduced and justified, where G/P variables denote group generate/propagate signals