Computer science
farzaneh jahanshahi javaran; Somayyeh Jafarali Jassbi; Hossein Khademolhosseini; Razieh Farazkish
Abstract
As the field of nanotechnology rapidly advances and the need for faster processing in smaller dimensions grows, as does the integration of Very Large-Scale Integration (VLSI) technology. These difficulties include things like large-scale area needs, high power consumption, and low operating speeds, which ...
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As the field of nanotechnology rapidly advances and the need for faster processing in smaller dimensions grows, as does the integration of Very Large-Scale Integration (VLSI) technology. These difficulties include things like large-scale area needs, high power consumption, and low operating speeds, which call for new approaches to lessen these constraints. Developed and implemented at the nano-based, Quantum-Dot Cellular Automata (QCA) technology presents itself as a viable way around these obstacles. The advent of QCA technology heralds our entry into the nano-scale realm, where the advantages of enhanced processing speeds, reduced dimensions, and minimal power consumption become manifest. This article focuses on the 7-input majority gate, a fundamental component in QCA technology, distinguished by its fault-tolerant characteristics. The primary objective is to present the design and simulation of this key gate within the context of QCA technology. Noteworthy among the merits of the 7-input majority gate is its capacity to implement logic gates with a greater number of inputs, consolidating multiple functionalities within a single gate. QCADesigner and QCAPro software have simulated the given gate, and the results demonstrate the exact and correct operation of the gate. This gate generates the output signal every 0.25 clock cycles and is built with 66 quantum cells within a 0.03 µm2. The simulation results demonstrate the precision of the circuit's operation. Additionally, basic fault-tolerant gates such as 4-input AND, and 4-input OR using a 7-input fault-tolerant majority gate have been suggested in order to illustrate the proper operation of the new gate.
Nanotechnology
Farzaneh Jahanshahi Javaran; Somayyeh Jafarali Jassbi; Hossein Khademolhosseini; Razieh Farazkish
Abstract
A novel technique for creating logic gates and digital circuitry at the nanoscale is quantum cellular automata (QCA). The sensitivity of the circuit is enhanced and quantum circuits are more susceptible to unfavorable external conditions when component size are reduced. In this article, we offer a five-input ...
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A novel technique for creating logic gates and digital circuitry at the nanoscale is quantum cellular automata (QCA). The sensitivity of the circuit is enhanced and quantum circuits are more susceptible to unfavorable external conditions when component size are reduced. In this article, we offer a five-input majority gate with fault-tolerant feature in QCA technology, taking into account the significance of constructing circuits that can withstand flaws. We also assess all potential defects in the process of arranging cells in specific locations on the surface. These errors consist of extra cells, rotation, deletion, and displacement. The gate under study is subjected to the aforementioned four failure categories in the first stage. The QCADesigner simulator engine is then used to assess the accuracy of the circuit performance in the second step. 41 quantum cells have been used to make the gate of this five-input majority gate with fault-tolerant feature in QCA technology. Several techniques are explored to discover such a majority gate, such as adding cells (i.e., introducing redundancy into the circuit) and particular cell layout techniques. The goal is to come up with a design that can ideally withstand possible faults with the least amount of overhead on the circuit for fault-tolerant through a certain cell layout. The findings demonstrate the implemented majority gate's notable advantage over comparable scenarios.
