In this paper, we have proposed a new reversible logic gate (NG) and also the quantum cost (QC), garbage outputs, delay optimized reversible combinational logic circuits such as four bit 2’s complement code converter circuit, BCD to Excess-3 code converter using reversible logic gate. The proposed NG is used to design a four bit 2’s complement code converter circuit, BCD to Excess-3 code converter and realization of different logic functions such as NOT, AND, NAND, OR, NOR, XOR, NXOR. The proposed (new reversible logic) gate is represented by quantum implementation. The proposed work is verified by Xilinx-ISE simulator software and others logic circuits are also verified. The QC of proposed gate is 5. The QC of four bit 2’s complement code converter and BCD to Excess-3 code converter are 11 and 14 which are better with respect to previous reported results.
Fault Tolerance in Reversible Logic Circuits and Quantum Cost Optimization
