نتایج جستجو برای: mv32 qca gate

تعداد نتایج: 43796  

2008
HANAN AHMED HOSSNI MAHMOUD ABD ALLA

In CMOS technology AND-OR combination logic is used because of the ease of its minimization using different established methodologies such as K-map. On the other hand, majority gatebased logic is not handled well in standard CMOS technologies, primarily because of the hardware inefficiencies in creating majority gates. As a result no optimization techniques of circuits based on majority gates w...

2007
Pablo Arrighi Vincent Nesme Reinhard Werner

Quantum cellular automata (QCA) consist in an array of identical finite-dimensional quantum systems. The whole array evolves in discrete time steps by iterating a unitary operator G. Moreover this global evolution G is shift-invariant (acts everywhere the same), and local (information can only be transmitted at a bounded speed). Whilst this axiomatic definition is clearly the natural ‘quantizat...

2016
Ingo Rohlfing

QCA has recently been subject to massive criticism and although the substance of that criticism is not completely new, it differs from earlier critiques by invoking simulations for the evaluation of QCA. In addition to debates about the meaning of the simulation results, there is a more fundamental discussion about whether simulations promise any relevant insights in principle. Some voices in t...

Journal: :Circulation 2013
Brahmajee K Nallamothu John A Spertus Alexandra J Lansky David J Cohen Philip G Jones Faraz Kureshi Gregory J Dehmer Joseph P Drozda Mary Norine Walsh John E Brush Gerald C Koenig Thad F Waites D Scott Gantt George Kichura Richard A Chazal Peter K O'Brien C Michael Valentine John S Rumsfeld Johan H C Reiber Joann G Elmore Richard A Krumholz W Douglas Weaver Harlan M Krumholz

BACKGROUND Studies conducted decades ago described substantial disagreement and errors in physicians' angiographic interpretation of coronary stenosis severity. Despite the potential implications of such findings, no large-scale efforts to measure or improve clinical interpretation were subsequently undertaken. METHODS AND RESULTS We compared clinical interpretation of stenosis severity in co...

Journal: :Journal of nanoscience and nanotechnology 2002
Alexei O Orlov Ravi Kummamuru R Ramasubramaniam Craig S Lent Gary H Bernstein Gregory L Snider

Quantum-Dot Cellular Automata (QCA) is a computational scheme utilizing the position of interacting single electrons within arrays of quantum dots ("cells") to encode and process binary information. Clocked QCA architectures can provide power gain, logic level restoration, and memory features. Using arrays of micron-sized metal dots, we experimentally demonstrate operation of a QCA latch-invert...

2017
Marcel Walter Robert Wille Daniel Große Frank Sill Torres Rolf Drechsler

Quantum-dot Cellular Automata (QCA) are an emerging computation technology in which basic states are represented by nanosize particles and logic operations are conducted through corresponding effects such as Coulomb interaction. This allows to overcome physical boundaries of conventional solutions such as CMOS and, hence, constitutes a promising direction for future computing devices. Despite t...

2007
Thomas Greckhamer Vilmos F. Misangyi Heather Elms Rodney Lacey

The authors present qualitative comparative analysis (QCA) as a viable method for strategic management research. Specifically, they demonstrate its ability to examine the potential interdependence and complexity among effects through a study of how industry, corporate, and business-unit attributes combine in determining business-unit performance. They present in an accessible manner the consecu...

2003
Wei Wang Konrad Walus G. A. Jullien

In this paper, a novel quantum-dot cellular automata (QCA) adder design is presented that reduces the number of QCA cells compared to previously reported designs. The proposed one-bit QCA adder structure is based on a new algorithm that requires only three majority gates and two inverters for the QCA addition. By connecting n one-bit QCA adders, we can obtain an n-bit carry look-ahead adder wit...

Journal: :CoRR 2018
Shadi Sheikhfaal

Quantum-dot Cellular Automata (QCA) as a nanoscale transistor-less device technology offers distinguishing advantages over the limitations of CMOS circuits. While more than 2 decades of design progress have been achieved with QCA, a comprehensive composition approach for the layout design in this technology is needed. In this study, the Priority-Phased Decomposition-Driven (PPDD) QCA logic desi...

2002
K. Walus A. Vetteth G. A. Jullien V. S. Dimitrov

Quantum-dot cellular automata (QCA) is a novel and potentially attractive technology for implementing computing architectures at the nano-scale. By applying a set of simple layout rules, arbitrary circuits can be made using QCA cells. In this work, we describe the design and layout of a QCA random access memory (RAM), showing the layout of individual memory cells, as well as, a suggested layout...

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