A novel design of quantum dot cellular automata 5-input majority gate with some physical proofs

Abstract

In a very fast growth of very large scale integration (VLSI) technology, it is the demand and necessity of time to achieve a reliable design with low power consumption. The quantum dot cellular automata (QCA), due to its small size, very high switching speed and ultra-low power consumption, can be an alternative for CMOS VLSI technology at nano-scale level. A novel 5-input majority gate for QCA is proposed in this paper which is suitable for designing QCA circuits in a simple and symmetric manner. Based on it, we have designed a full adder with some physical proofs provided for the functions of Boolean techniques to verify the functionality of the proposed devices properly. For computer simulations analysis, functionality of full adder has been checked using the QCADesigner tool. Both simulation results and physical proofs confirm the usefulness of our proposed gate design for designing any digital circuit.