An inventive design of 4*4 bit reversible NS gate

The model of computing in which the computational progression is reversible or to some extent time inverting is entitled reversible computing. In the modern epoch reversible logic has materialized as a promising, competent technology comprising its applications in low power CMOS, quantum computing, nanotechnology, and optical computing. The conventional gates such as AND, OR, and EXOR are not reversible. Here in this manuscript we put forward a 4*4 reversible gate design called “NSG”. The most noteworthy, considerable attribute of the proposed gate is that it can work individually as a reversible full adder, reversible full subtractor, reversible half adder, and reversible half subtractor. That is now we are capable of implementing reversible full adder, subtractor and reversible half adder, subtractor with a single gate only. The proposition of this meticulous manuscript is a design a parity preservation property using NS Gate.