Among cutting-edge nanotechnologies, quantum-dot cellular automata (QCA) is a well-matched substitute for transistor-based technologies. Full-adder as a primary element of computational circuits has a great effect on other circuits. Hence this paper presents a new schematic design of QCA full-adder (QFA) to implement an efficient layout with minimum cells. The simple structure of the proposed design in minimum latency makes the aforementioned layout unique among state-of-the-art QFAs. Besides, different sizes of ripple carry adder (RCA) are implemented using this efficient full-adder layout to show its applicability. The proposed design of this work are simulated using QCADesigner tool. Moreover, The proposed full-adder have verified with physical formulas. 32.43% decreasing cell count and 50% increasing speed is the result of a comparison between our optimum QFA layout and previously published design with a similar structure. Ultimately different sizes of ripple carry adders of this paper are compared to the previous layouts and results show the performance of suggested RCA’s structure.

在最先进的纳米技术中，量子点细胞自动机（QCA）是晶体管技术的良好替代品。全加法器是计算电路的主要元素，对其他电路有很大的影响。因此，本文提出了一种新的QCA全加法器（QFA）原理图设计，以实现具有最少单元的有效布局。所提出的设计的简单结构以最小的延迟使上述布局在最新的QFA中独树一帜。此外，使用这种有效的全加法器布局可实现不同大小的纹波进位加法器（RCA），以显示其适用性。使用QCADesigner工具模拟了这项工作的拟议设计。此外，所提出的全加法器已通过物理公式验证。32。我们的最佳QFA布局与先前发布的结构相似的设计之间进行比较的结果是，单元数减少了43％，速度增加了50％。最终将本文不同尺寸的纹波进位加法器与之前的布局进行了比较，结果表明了建议的RCA结构的性能。