New Technology is quantum dot cellular automata at Nano metric scale, which has lower area (PLBs) requirement and low Power Consumption, quantum cells. by using the CMOS technology, layout size can’t lesser than their present size, the QCA approach proves to one of the potential arrangements in beating this physical layout. Using this QCA technology, we created Majority gate, with the help of the Majority gate calculations, newBinary coded Decimal (BCD) adder has developed. The method is simulated and synthesized using Xilinx ISE software with the help of Verilog programming language. The results shown that the proposed method has better performance properties like delay (speed), power utilization, area, ADP and PDP compared to existing methods.

QCA, CMOS, BCD