Design of Optimized and Energy Efficient 1-bit Comparator

New high frequency and low power devices are being created using the developing nanotechnology termed quantum-dot cellular automata (QCA). One of the most important and frequently used circuits is the comparator. Twelve quantum cells with a surface area of roughly 0.01 square micrometers are used in the proposed comparator. This structure provides a significant benefit over previous preceding comparators with reference to complexity, cell count, delay, and energy dissipation. The comparator's proposed design performed better the existing circuit design in terms of cost with a 50% decrease and energy with a 10% reduction. The QCA Designer-E tool is used to calculate the energy dissipation of this design.