Quantum mechanics

Algorithm

Linguistics

Engineering

Philosophy

Materials science

Government (linguistics)

Power (physics)

Computer science

Distributed computing

Electronic circuit

Dissipation

Quantum dot cellular automaton

Physics

Nanotechnology

Economic shortage

Fault tolerance

Cellular automaton

Electronic engineering

Quantum

Quantum cellular automaton

Quantum dot

CMOS

Optoelectronics

Electrical engineering

Optik

Recently, Complementary Metal-Oxide-Semiconductor (CMOS) technology is limited by many barriers such as short channel effects and high power dissipation. Therefore, many alternatives are proposed to solve these shortages. One of the potential alternatives to CMOS is Quantum-dot Cellular Automaton (QCA) where binary information is encoded by using the electron location in a square cell. However, three types of fault (cell misalignment, cell missing, and cell dislocation) may cause the failure of the QCA-based designs. On the other hand, D-latch is one of the basic circuits in designing larger components such as counters and memories. Therefore, in this paper, a new fault-tolerance QCA-based D-latch is proposed and its performance is evaluated. The obtained results using QCADesigner have revealed that the proposed design produce correct output and thereby can tolerate 86% single-cell omission defects. Also, it has acceptable performance regarding the two and three cellular defects.

Designing an efficient fault tolerance D-latch based on quantum-dot cellular automata nanotechnology