Jump to ContentJump to Main Navigation
After DigitalComputation as Done by Brains and Machines$
Users without a subscription are not able to see the full content.

James A. Anderson

Print publication date: 2017

Print ISBN-13: 9780199357789

Published to Oxford Scholarship Online: February 2018

DOI: 10.1093/acprof:oso/9780199357789.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 14 December 2019

Computing Hardware

Computing Hardware

Digital

Chapter:
(p.27) Chapter 3 Computing Hardware
Source:
After Digital
Author(s):

James A. Anderson

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199357789.003.0003

Digital computers are built from hardware of great simplicity. First, they are built from devices with two states: on or off, one or zero, high voltage or low voltage, or logical TRUE or FALSE. Second, the devices are connected with extremely fine connections, currently on the order of size of a large virus. Their utility, value, and perceived extreme complexity lie in the software controlling them. Different devices have been used to build computers: relays, vacuum tubes, transistors, and integrated circuits. Theoretically, all can run the same software, only slower or faster. More exotic technologies have not proved commercially viable. Digital computer hardware has increased in power by roughly a factor of 2 every 2 years for five decades, an observation called Moore’s Law. Engineering problems with very small devices, such as quantum effects, heat, and difficulty of fabrication, are increasing and may soon end Moore’s Law.

Keywords:   digital computers, Moore’s Law, interconnections, logic, relays, vacuum tubes, transistors

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .