Quantum-dot Cellular Automata (QCA) is a possible future nanoelectronic computing technology, based on cells of coupled quantum dots. The QCA cells have features on the very low nanometer scale, much smaller than the present state of art size of the smallest transistor. This paper presents design and layout of novel XOR gate implementations with minimum complexity and cell count in comparison w...

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...

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 is a novel paradigm for computing at the nanoscale. Cells are the basic computing element in quantum-dot cellular automata and function as structured charge containers rather than as current switches. Computing with quantum-dot cellular automata is enabled by quantum-mechanical tunneling and Coulomb interactions. The use of molecules as cells to realize quantum-dot...

This paper proposes a SPICE model development methodology for quantum-dot cellular automata (QCA) cells and presents a SPICE model for QCA cells. The model is validated by simulating the basic logic gates such as inverter and majority voter. The proposed model makes it possible to design and simulate QCA combinational circuits and hybrid circuits of QCA and other NANO devices using SPICE. In th...

In order to design large digital circuits using Quantum-Dot Cellular Automata(QCA) cells, CAD tools and automated design methodology for QCA circuits are essential. This paper presents a QCA circuits design methodology based on traditional CMOS circuits design flow. This QCA circuits design methodology utilizes the current CMOS circuits design tools such as HSPICE and Synopsys Design Compiler. ...

In this paper, we propose a novel Quantum-dot Cellular Automata (QCA) based Programmable Switch Matrix which can be used as a routing element for future nano Field Programmable Gate Arrays (FPGAs). QCA technology is an emerging technology based on encoding binary information in charge configuration within quantum dot cells. In FPGAs, the Programmable Switch Matrix (PSM) is the interconnection c...

SRAM or Static Random-Access Memory is the most vital memory technology. fast and robust but faces design challenges in nanoscale CMOS such as high leakage, power consumption, reliability. Quantum-dot Cellular Automata (QCA) alternative technology that can be used to address of conventional SRAM. In this paper, a cost-efficient single layer cell has been proposed QCA. The 39 cells with latency ...

Improved layout of QCA(quantum-dot cellular automata)based PLA (programmable logic array) that enhance the defect tolerance is proposed, in order to develop next generation circuit technology that replace the conventional CMOS technology. We analyze which QCA device (quantum-dot cell) limits the defect tolerance of the AND/OR plane cell of the QCA-PLA by using QCA circuit simulator or QCADesign...