Abstract
In this study, two new full adder/full subtractor designs based on quantum-dot cellular automata technology have been proposed. By means of the presented equation for SUM and SUBTRACT operations, the new high-speed, low power, and cost efficient designs have been achieved. Even if the three-level design has a lower cell count, occupies less area, and operates at a higher speed, the one-layer design is far more feasible. Analysis of the temperature and energy consumption of the proposed design indicates that the proposed approaches are superior to those of previous works.
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