| Sumario: | Quantum-dot Cellular Automata (QCA) is an extremely intriguing nano-scale innovation. Tiny component size and super low power utilization are the main highlights of QCA contrasted with CMOS. Counters are considered as perhaps the most essential segments in successive circuits. As indicated by the high pace of measurements shrinkage in customary CMOS circuits, serious challenges threat this technology. An effective design for irregular access memory cell with set and reset capacity which depends on the D-hook. Planning powerful and proficient QCA-based consecutive circuits is a critical subject which needs efficient designs for locks. Quantum-dot cellular automata (QCA) is quite possibly the most encouraging nanotechnologies that empower territories of more modest size, for example 60% less plan region than the CMOS innovation, with ability to create fast by taking less cycles contrasted with the other CMOS plans with decrease scaling issues. The QCA-based plans are considered as the best elective answers for the semiconductor based (CMOS) plans. This paper assesses the exhibition of performance of various implementations of Sequential logic gates QCA based XOR and NAND gates and Reversible logic gates QCA basedFeynman gate and Fredkin gate proposes different novel formats with better execution boundaries. The QCA permits more conceivable plan structures for every logic gate to empower enhancement of the zone. These constructions are planned and reproduced utilizing QCA Designer Tool.
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