Narea-delay efficient binary adders in qca pdf

This paper presents a novel robust qca fulladder based on an efficient five input. Design of efficient bcd adders in quantum dot cellular. A 64bit binary adder designed as described in this brief exhibited a delay and occupied an active area. Towards coplanar quantumdot cellular automata adders based on efficient threeinput xor gate. Areadelay efficient binary adders in qca request pdf. It achieved speed performances higher than all the existing qca adders, with an area requirement comparable. As transistors decrease in size more and more of them can be accommodated in a single.

In this paper, a novel quantumdot cellular automataqca adder design is presented that decrease the number ofqca cells compared to. Area delay efficient novel adder by qca technology. A quantumdot cellular automaton qca is an attractive emerging technology suitable for the development of ultradense lowpower higherperformance digital circuits. Giuseppe cocorullo, areadelay efficient binary adders in qca, 20 ieee.

A 128 bit binary adder is designed in qca and as described brief. Pdf areadelay efficient binary adders in qca ijera. Based on three criteria power, area and delay time, qca can be considered as an alternative for. The proposed onebit qca adder is based on a new algorithm that requires only three. Gowda research scholar, dept of ece, kmm institute of technology and science, tirupathi, ap, india. Abstract in this paper, a novel quantumdot cellular automata qca adder design is presented that decrease the number of qca cells compared to previously method designs. Areadelay efficient binary adders in qca ieee journals. Hence, the qca architecture is therefore, low area, low delay, simple and efficient for vlsi hardware implementation. The csla is not area efficient because which uses multiples of. This brief proposes a new approach to design qcabased bcd adders. Adder design using qca technique with area delay efficient. However, transistors cannot get much smaller than their current size. The 64 bit version of the novel adder spans over 18. Towards coplanar quantumdot cellular automata adders based on.

Area delay efficient novel adder by qca technology international. Conclusion the reduced number of gates of this work offers the great advantage in the reduction of area and also the total delay. Tech student,ece,stanley stephen college of engineering and technology, associate2 professor,ece,stanley stephen college of engineering and technology kurnool,andhra pradesh, india abstractas transistors decrease in size more and more. Rtl design of efficient highspeed adders using quantum. In this paper, a novel quantumdot cellular automata qca adder design is presented that decrease the number of qca cells compared to previously method designs. Efficient qcabased implementations have been demonstrated for several binary and decimal arithmetic circuits, but significant improvements are still possible if the logic gates inherently available within the qca technology are smartly exploited. Design of a efficient hybrid adder using qca ijesi.