Abstract— Quantum dot Cellular Automata (QCA) is anticipated to allow for extremely dense nano-scale design and implementation of logic circuit over the Complementary Metal Oxide Semiconductor (CMOS). QCA has been considered as a promising alternative to CMOS technology for its lower power consumption, higher scale integration and higher switching frequency. Moreover, the basic element in QCA i...

Quantum dot Cellular Automata (QCA) is a promising technology and can emerge alternative to the existing CMOS based technology. This paper presents a novel reduced design of a full adder both in size and delay. Next a reduced area multilayered Arithmetic Logic Unit (ALU) is presented with significantly less delay. The designs have been verified and simulated using the QCA Designer tool. Keyword...

Absiract-Quantum-dot cellular automata (QCA) is an approach to computing which eliminates the need for transistors by representing binary digits as charge configurations rather than current levels. Coulomb interactions provide device-device coupling without current flow. Clocked control of the device, allows power gain, control of power dissipation, and pipelined computation. Molecular QCA uses...

A novel technology the Quantum dot Cellular Automata (QCA) appears to be an alternate nano scale technology to provide the properties and functionalities of that have made CMOS successful over the past several decades. The experiment is carried out in QCA were demonstrated and realized the fundamental digital blocks. This paper introduce the designing a computationally useful and regular struct...

CMOS technology has achieved the device dimension in the nanometer range. Beyond this CMOS technology is the QCA (Quantum-dot Cellular Automata). Due to nanoscale defects may occur in this technology so in the consequences of it the faults will occur. This paper presents the defect analysis of QCA basic devices like Majority Voter (MV), inverter. The defect analysis and its effects on the outpu...

Quantum-dot Cellular Automata (QCA) can be considered as a candidate for the next generation digital logic implementation technology due to their small feature sizes and ultra low power consumption. Up to now, several designs using QCA technology have been proposed. However, we found not all of the designs function properly. Furthermore, no general design guidelines have been proposed so far. T...

CMOS miniaturization limits have improved research on other advanced alternative technologies. Quantum Cellular Automata (QCA) is a nanometer scale technology that is one of these alternatives. Two principals have been introducedin the concept of Random Number Generator which are related to some physical occurrences or computational algorithms. In this paper we introduce a QCA circuit which is ...

<p>The limitations related to CMOS such as power consumption and parasitic capacitance lead scientists search for new technologies. Quantum-dot cellular automata (QCA) is a alternative technology that uses charges instead of voltage level binary representation. In QCA, many metrics are used circuit differentiation delay, complexity area. this work, simple block 2:1 QCA-Multiplexer propose...

Among emerging technologies, Quantum-dot Cellular Automata (QCA) is an attractive alternative for transistor based technologies. In this paper, novel efficient Quantum-dot Cellular Automata (QCA) devices are proposed that provide 3-input and 4-input AND & OR gates. These gates have simple structure and are efficient in term of cell counts, complexity and latency. These components are suitable f...