An Efficient Design of QCA Full-Adder-Subtractor with Low Power Dissipation

Gassoumi, Ismail; Touil, Lamjed; Mtibaa, Abdellatif

doi:10.1155/2021/8856399

Cited by 16 publications

(6 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, innovative QCA-based subtractor/adder systems that were both area and energy-efficient were presented in the article. 36 A full adder and subtractor are constructed after constructing a 3-input XOR gate. The QCADesigner 2.0.3 program was used to assess the simulation findings of the recommended layouts.…”

Section: Background and Related Workmentioning

confidence: 99%

“…The used XOR gate is a single-layer gate with a reasonable distance between inputs to prevent crosstalk and an output cell in the gate's outer portion. 36 In these designs, cells are layered under the first layer's input cells A, B, and C to reduce noise. They convey the input signals to the 3rd layer and the 3-input majority gate because of the intrinsic nature and Columbic repulsion.…”

Section: The Suggested Qca-based Full-adder-subtractormentioning

confidence: 99%

“…In this investigation, the Subtractors, including Full‐Subtractor and Half‐Subtractor, were created and modeled using QCADesigner. In addition, innovative QCA‐based subtractor/adder systems that were both area and energy‐efficient were presented in the article 36 . A full adder and subtractor are constructed after constructing a 3‐input XOR gate.…”

Section: Background and Related Workmentioning

confidence: 99%

“…The input lines in this design are A , B , and C . The XOR gate 36 output is SUM , while the 3‐ input majority gate output is Carry . The truth table for the full‐adder circuit is presented in Table 1.…”

Section: The Suggested Qca‐based Full‐adder–subtractormentioning

confidence: 99%

“…In these designs, the 3‐input XOR gate, 36 inverter gate, and 3‐input majority gate mimic an effective adder–subtractor architecture regarding the area, latency, cost, and delay. The utilized XOR relies on QCA's inherent capabilities and does not require any combinational operations.…”

Section: The Suggested Qca‐based Full‐adder–subtractormentioning

confidence: 99%

See 4 more Smart Citations

A new applicable and multilayer design of nanoscale adder–subtractor using quantum‐dots

Gao

Mohammed

2022

Concurrency and Computation

View full text Add to dashboard Cite

Quantum-dot cellular automata (QCA) is a technique that can substitute silicon transistors. Besides, the computational architecture and systems are focused on nanoscale QCA in response to industry demands for energy-efficient and high-performance computing systems. Because of the importance of adder/subtractor designs in logical circuits, a novel QCA-based adder/subtractor design is suggested in this study. A full adder is developed first, followed by a full subtractor. These QCA-based adder/subtractor designs are simple, ultra-efficient, constructive, and have easy input and output access.To create the required output, these circuits make use of quantum technology's intrinsic features. The QCADesigner program is used to assess the simulation findings of the recommended designs. Additionally, these designs are investigated in terms of complexity, clocking, cells, and latency. It shows that the recommended design is more efficient than standard designs regarding the area, cell count, and cost. These circuits are among the circuits in which easy access to inputs and outputs is provided, and their connection to other circuits makes them more practical. In addition to the above, the low number of cells, high speed, and easy implementation are among the innovations of the presented circuits. K E Y W O R D Sfull-adder, QCA, QCADesigner, quantum-dot cellular automata, subtractor INTRODUCTIONCMOS circuits may be made in a small amount of time, leading designers to look into it as a business strategy. 1 Documentation of leakage current and high-power usage in CMOS devices has surfaced in past years. As a result, the CMOS technological revolution must occur. Moore's law is followed by CMOS technology, which is based on today's conventional transistors. 2 Enhancing the transistors in a chip in CMOS technology is undesirable. However, since micro and nano-structures have gotten much attention recently, 3 a strategy at the nanoscale can demonstrate the ability to change Moore's law. That strategy is quantum-dot cellular automata (QCA) technology, which broke Moore's law by rapidly substituting innovative technology with CMOS. [4][5][6] In the QCA technology, several studies are conducted on the layout of different digital circuits like basic logic gates, 7 adders, 8,9 encoders, 10 subtractors, 11-13 multiplexers, 14-17 dividers, 18,19 and memory circuits. 20,21 Meanwhile, adders and subtractors hold a unique place in digital systems because they significantly influence their performance. 22,23 It is worth noting that developers strive to research a wide range of challenges, including complexity and limited occupancy space. However, owing to the novelty of this technology, there are still several significant hurdles that have yet to be overcome. 24

show abstract

Section: Background and Related Workmentioning

confidence: 99%

Section: The Suggested Qca-based Full-adder-subtractormentioning

confidence: 99%

Section: Background and Related Workmentioning

confidence: 99%

Section: The Suggested Qca‐based Full‐adder–subtractormentioning

confidence: 99%

Section: The Suggested Qca‐based Full‐adder–subtractormentioning

confidence: 99%

See 3 more Smart Citations