Design of Arithmetic Circuits in Quantum Dot Cellular Automata Nanotechnology | springerprofessional.de

Springer Professional

nach oben

2015 | Buch

Kapitel lesen Erstes Kapitel lesen

Design of Arithmetic Circuits in Quantum Dot Cellular Automata Nanotechnology

verfasst von: K. Sridharan, Vikramkumar Pudi

Verlag: Springer International Publishing

Buchreihe : Studies in Computational Intelligence

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

Einloggen, um Zugang zu erhalten

Über dieses Buch

This research monograph focuses on the design of arithmetic circuits in Quantum Dot Cellular Automata (QCA). Using the fact that the 3-input majority gate is a primitive in QCA, the book sets out to discover hitherto unknown properties of majority logic in the context of arithmetic circuit designs.

The pursuit for efficient adders in QCA takes two forms. One involves application of the new results in majority logic to existing adders. The second involves development of a custom adder for QCA technology. A QCA adder named as hybrid adder is proposed and it is shown that it outperforms existing multi-bit adders with respect to area and delay. The work is extended to the design of a low-complexity multiplier for signed numbers in QCA. Furthermore the book explores two aspects unique to QCA technology, namely thermal robustness and the role of interconnects.

In addition, the book introduces the reader to QCA layout design and simulation using QCADesigner.

Features & Benefits:

This research-based book:

·Introduces the reader to Quantum Dot Cellular Automata, an emerging nanotechnology.

·Explores properties of majority logic.

·Demonstrates application of the properties to design efficient arithmetic circuits.

·Guides the reader towards layout design and simulation in QCADesigner.

Anzeige

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

Abstract

Personal computers, smartphones, video game consoles and several other gadgets have a processor based on the metal-oxide semiconductor field effect transistor (MOSFET).

K. Sridharan, Vikramkumar Pudi

Chapter 2. QCA Terminology

Abstract

In this chapter, we present key aspects of the QCA technology.

K. Sridharan, Vikramkumar Pudi

Chapter 3. Design of Basic Digital Circuits in QCA

Abstract

Designs in QCA are based on three primitives: 3-input majority gate, inverter and wire. In this chapter, we show how elementary circuits can be designed using these primitives.

K. Sridharan, Vikramkumar Pudi

Chapter 4. Design of Ripple Carry and Prefix Adders in QCA

Abstract

In this chapter, we consider multi-bit adder design in QCA. The simplest multi-bit adder (with low area) that has been explored for CMOS implementation in the past is the ripple carry adder. We describe how one can get an efficient QCA design. We also consider advanced adders (with low delay) based on the prefix concept I. Koren, Computer Arithmetic Algorithms (A.K. Peters Ltd., Natick, 2002) [1]. Some of the results in this chapter have been reported in V. Pudi, K. Sridharan, IEEE Trans. Nanotechnol. 11(1): 105–119, (2012) [2].

K. Sridharan, Vikramkumar Pudi

Chapter 5. Design of a Hybrid Adder in QCA

Abstract

In the previous chapter, we presented efficient QCA realizations of existing adders based on new results on majority logic.

K. Sridharan, Vikramkumar Pudi

Chapter 6. Design of a Multiplier in QCA

Abstract

In the earlier chapters, the focus was on adder designs.

K. Sridharan, Vikramkumar Pudi

Chapter 7. Discrete Hadamard Transform Computation in QCA

Abstract

In the previous chapters, we have examined QCA-based designs of multi-bit adders and a multiplier. Adders and multipliers constitute basic arithmetic units and hence designs for these (along with ones for memory elements) take us closer towards QCA-based microprocessors.

K. Sridharan, Vikramkumar Pudi

Chapter 8. Study of Thermal Robustness of QCA Designs

Abstract

One aspect that is important for QCA circuits in specific technologies is thermal robustness. For example, the performance of a metal-dot QCA circuit is subject to thermal fluctuation [1]. In particular, one has to take care of polarization, since in large designs this could be as important as delay or area. In this chapter, we present brief studies and comparisons of adder designs with respect to output polarization. In particular, we consider the hybrid adder which has the best performance among the adders for thermal robustness studies. We also compare with the carry flow adder (which has low cell count and delay [2]). The results presented are for the 4-bit version of the adders.

K. Sridharan, Vikramkumar Pudi

Chapter 9. The Road Ahead

Abstract

This research has studied digital design in the context of emerging nanotechnologies. In particular, we have studied the problem of designing arithmetic circuits in Quantum Dot Cellular Automata. We have developed a number of theoretical results on majority logic.

K. Sridharan, Vikramkumar Pudi

Backmatter

Titel: Design of Arithmetic Circuits in Quantum Dot Cellular Automata Nanotechnology
verfasst von: K. Sridharan
Vikramkumar Pudi
Copyright-Jahr: 2015
Verlag: Springer International Publishing
Electronic ISBN: 978-3-319-16688-9
Print ISBN: 978-3-319-16687-2
DOI: https://doi.org/10.1007/978-3-319-16688-9

Premium Partner