Design of Efficient Adders and Subtractors based on Quantum Dot Cellular Automata (QCA) (original) (raw)
Compatibility of a design is an archetype of three aspects, namely speed, power, and area. Achieving all three of them is exceptionally desirable. Quantum-dot Cellular Automata is one of the most surrogate nanotechnologies in the electronics industry. Being a low power utilizer, a high-speed operator, and Nano-size when it comes to the fabrication process, it has its own leverages. Quantum-dot Cellular Automata cells are assimilated in wires and logic gates as a fundamental building block of nanoscale digital circuits. Implementing QCA circuits with the help of the XOR gate, the circuit can be made simpler in delay and cell count. In this paper we propose our designs of basic digital circuits such as adders and subtractors by utilizing QCA technology with estimation of its energy dissipation. These designs are focused to reduce cell count, area consumption and delay as compared to the earlier and existing designs. All the designs are simulated with the help of QCA Designer software provided by Walus Lab at the University of British Columbia. The energy dissipation of designed circuits are calculated using QCA Designer-E software developed at the University of Bremen.
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.