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A computer is a machine for manipulating data according to a list of instructions known as a program.

Computers are extremely versatile. In fact, they are universal information-processing machines. According to the Church–Turing thesis, a computer with a certain minimum threshold capability is in principle capable of performing the tasks of any other computer, from those of a personal digital assistant to a supercomputer, as long as time and memory capacity are not considerations. Therefore, the same computer designs may be adapted for tasks ranging from processing company payrolls to controlling unmanned spaceflights. Due to technological advancement, modern electronic computers are exponentially more capable than those of preceding generations (a phenomenon partially described by Moore's Law).

Computers take numerous physical forms. Early electronic computers were the size of a large room, and such enormous computing facilities still exist for specialized scientific computation — supercomputers — and for the transaction processing requirements of large companies, generally called mainframes. Smaller computers for individual use, called personal computers, and their portable equivalent, the laptop computer, are ubiquitous information-processing and communication tools and are perhaps what most non-experts think of as "a computer". However, the most common form of computer in use today is the embedded computer, small computers used to control another device. Embedded computers control machines from fighter aircraft to digital cameras.

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American Computer Museum - Computer history and information age exhibits. Photographs of some of the current collections, including personal computers, calculators, the first minicomputer (which weighed 250 lbs), and the influence of the information age on the expansion of the West.

American University Computing History Museum - Devoted to promoting an awareness of the history of computing and providing support to teachers.
Meta Description: [ Teaching history of computing, History of programming languages, history of computers ]

Computer History Museum - Focuses exclusively on the history of computing. Includes hours and directions. Located in Mountain View, California.

Computer Museum .it - Based on a personal collection of computers, with an archive of 1000 tech tables, old computer advertisements and history pages.
Meta Description: [ Computer Museum .it è un sito dedicato alla storia e all'evoluzione del computer e dell'informatica, con un vero e proprio museo del calcolatore e centinaia di notizie storiche ]

Computer Museum @ Bletchley Park - Hands on exhibition of computing technology from Colossus to the present day on the site where the first computers were used to break the enigma code, Bletchley Park
Meta Description: [ WW2 Bletchley Park, National Codes and Cipher Centre Main Website. Take Virtual Tour of Churchill's Secret Intelligence and Computers Headquarters. ]

DigiBarn Computer Museum - Traces the history of the evolution of personal computing and the graphical user interface.

500 Doug Coward's Analog Computer Museum - An on-line museum of analog computing devices.
Meta Description: [ An online museum of analog computers and their history. ]

Houston Computer Museum - Will be open to the public six days a week starting sometime in the next 18 months. Includes contact information.

Nostalgia Museum - Aims to preserve the culture of computers and consoles that for market reasons have become obsolete.

Old-Computers.com - Includes computer descriptions, magazine, forums, links, quiz, scans, and a collectors database.

Pelikonepeijoonit - The Arctic Computer and Console Museum
Meta Description: [ The Arctic Computer and Console Museum - Pelikonepeijoonit ]

Personal Collection of Jetze Mellema - Collection of old home computers: Atari, MSX, Commodore, Sinclair and many others.

Peters Vintage Computer Collection - From the Commodore Pet 2001 to the Apple iMac.

500 Rhode Island Computer Museum - A site devoted to computer preservation and education.
Meta Description: [ This site promotes the ownership, preservation, and restoration of antique computers and their history. ]

Silicium - A French organization which collects old computers, repairs them and then regularly organizes exhibitions.

The As-Yet-Unnamed PC Museum - Collection of Personal Computers, including several rarities and prototypes. Specialising in Atari, Apple, Commodore Microbee.

The Atari History Museum - Collection of all things Atari. Includes video clips of advertisements, technical documents, prototypes, and general machine information.
Meta Description: [ The Atari History Museum: The interenets premiere site for information, images and history of Atari ]

The Computer Hall of Fame - Honors major achievements in the computer industry.

The Computer Museum of America - San Diego museum whose mission is to preserve the major milestones in the development of the computer industry and to chronicle these milestones for the enrichment and education of all.

The First Computer Museum of Nova Scotia, Canada - A walk-in computer museum in eastern Canada includes a collection of vintage microcomputers, video games and robots.

The Home Computer Museum (HCM) - Extensive personal collection of most European and International Home Computers complete with excellent photography.
Meta Description: [ HCM - The HomeComputer Museum. A collection of now obsolete computers like Acorn, Amstrad, Apple, Atari, Commodore, MSX, Schneider, Sharp, Sinclair, Tandy ]

The Machine Room - Information on numerous old computers. Includes pictures, descriptions, technical details, trivia, links, and information for collectors.
Meta Description: [ Established early 1995, this site hosts information on numerous interesting, old computers. There are pictures, descriptions, technical details, trivia, links and information for collectors. The site is dynamic and community-based, so it is constantly updated and improved. ]

The Obsolete Computer Museum - Visit my collection of personal computers from 1976 to the present. On display is Apple II, IIe, Apple III, Mac SE/30, Mac Classic II and TRS-80 to name a few. Also the homebrew EDCAM.
Meta Description: [ Cory Heisterkamp Eldorado Eldo 1976 1985 antique tv television nixie tube apple II EFI megasquirt allante obsolete computer bose repair leds coupe deville 1959 radarange amana jetset modern mid century modernism kitsch retro tiki ikea deville fuel injection cadillac coupe digital mac macintosh ap... ]

The Secret Weapons of Commodore - Prototype and rarities of the CBM / Commodore lines of machines. Informative chronological site on all things Commodore.

The Topeka Computing Museum - Includes exhibit information and photos.
Meta Description: [ Gateman.com - Kearn & Associates, internet services ]

The Vintage Computer Club Malta - Dedicated to old equipment. History, collection, news, trades, and forum.

The Virtual Museum of Computing (VMoC) - Links to on-line resources concerning the history of computing around the world, including pioneers of the field such as Alan Turing.
Meta Description: [ This virtual museum includes an eclectic collection of WWW hyperlinks connected with the history of computing and on-line computer-based exhibits available both locally and around the world. ]

500 University of Virginia's Computer Museum - Contains various computer-related artifacts, both historical and modern, with photographs and descriptions.

Wave Report: Computer History Museum - Over one thousand photographs taken at the Californian institution.
Meta Description: [ The WAVE Report is a Technology Report covering 3D, Information appliances, the Internet, Virtual Reality and the Future of computing ]

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