Implementation of three-variable universal-threshold-logic gates using quantum-dot cellular automata.
Shi-yan Ying · Journal of Zhejiang University(Science Edition) · 2010
Quantum-dot cellular automata(QCA) is an promising nanotechnology which has potential applications in future computers.Its advantages such as faster speed,smaller size and lower power consumption are very attractive.Universal-threshold-logic gates with similar structure and function of nerve cell have stronger function than traditional logic gates Based on the investigation of the basic principles of QCA and QCA logic devices,three-variable QCA universal-threshold-logic gates with complementary outputs are designed.An example showing the realization of three-variable threshold logic function with three-variable QCA universal-threshold-logic gates tabular design method is given.All 256 three-variable logic functions can be realized with the QCA universal-threshold-logic gate.Simulation results are obtained by using the QCA Designer tool for the proposed QCA circuits.Simulation results confirm that the proposed circuits have correct logic function.