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.
More on [ Computer ]
Collecting and Trading :: Malicious Software
Historical :: Hardware
Computer History
Computers :: Technology
Electronics and Machinery :: Antiques and Collectibles

Obsolete Computer Museum - A large collection of obsolete computers. Includes photographs and a 'Help Line' for questions and answers.
1000 BiT - Database of vintage computers, documentation, brochures and advetisements, with many images. Users can provide trade or want lists. English/Italian.
Meta Description: [ Vintage Computer Collections, Manuals, Adverts, Pictures. Manage your vintage computer colelction on line! ]
A Computer Collectors Site - Information about how to collect old computers, and help with reading and converting old disk formats.
Albert's Virtual Computer Museum - Pictures and information about obsolete computers and game consoles.
Meta Description: [ Pictures and information about computers ]
Ancient Computer Community - A collection of obsolete computers, peripherals and game consoles, with a library and photo gallery. Has a member's area for messaging.
Meta Description: [ Retrocomputing & Retrogaming ]
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Binary Dinosaurs - On-line computer museum with photographs, articles and some humourous commentary.
Meta Description: [ Possibly the UK's biggest private collection of home computers from 1972 to 1997 ]
Bryan's Old Computers - A collection of pre-1982 microcomputers, with stories and photos of their full restoration to original condition.
Carl Friend's Minicomputer Museum - A private collection of calculating machines, from slide rules to microcomputers and workstations, with photographs and descriptions.
Classic Computer Online Museum - Information about Commodore, Sinclair, and other computers, with photographs and articles about game programs.
Meta Description: [ A collection of classic home computers. Articles on related subjects. ]
Classic Computers - Subscribe to a classic computer discussion group, or join the Classic Computer Rescue Squad. Some links to vintage computer resources.
Clive.nl - Books, software, magazines and hardware from various retro home computers from the 1980s and 1990s.
Collection of Old Computers - A collection of Commodore and other 6502-based computers, with some discussion of programming.
Meta Description: [ Collection of Old Computers ]
Commodore B Series - Detailed information for collectors and users about the hardware, firmware, software and history of the Commodore B Series computer, including a list of resources.
Commodore Gallery - A collection of computers and other products by Commodore Business Machines maintained by Bo Zimmerman.
Commodore Home Computer Museum - A private collection preserving the Commodore Computer History in New Zealand, with various models of Commodore and Amiga computers and peripherals.
Meta Description: [ A Personal Home Computer Museum attempting to preserve the range of Commodore products which were sold in New Zealand. ]
Computer History 08 - A Yahoo! Group for those interested in computer history.
Meta Description: [ COMPUTER-HISTORY-08: For all who wish to send and receive messages regarding computer history. List sponsored by, Web Design by Terianne Smalley: h ]
Computer History Association of California (CHAC) - An organization of collectors, with computer history, newsletter, photographs and general information about collecting.
Meta Description: [ The history of computing in California, the magazine we publish about it, and the museum we're creating to display it. Links to computer history resources worldwide. ]
Computer Museum - A collection of IBM mainframes, peripherals, memory systems and troubleshooting equipment.
Meta Description: [ Fee Computer Services provide cost effective computer maintenance and sevices to IBM users throughout the United Kingdom ]
Computer Museum TonH - Ton den Hartog's museum with computers, calculators, and other electronic devices, as well as books, magazines, and a want list and for sale list. Has an automated slide show to display items in the museum.
Computer Museums and RetroComputing Culture - Ring reflecting the socio-anthropological impact of technological development.
Meta Description: [ The RetroComputing Ring tries to reflect the socio-anthropological impact of technological development. It's also an invitation to a reflection and comprehension, particularly from school, of Computer ]
Donovan Marshall's Computer Collection - Pictures and specs of the computers in his collection. Also includes some calculators and video game consoles.
Meta Description: [ Computer Collection ]
Dragon Data Archive - A collection of Dragon Data Ltd (UK) computers, hardware, software, and advertisements, with photographs, publications, and a swap shop.
Meta Description: [ The Dragon Data Archive, Preserving the Dragon 32, 64, hardware, software and history of Dragon Data ]
Erik S. Klein's Vintage Computer Collection - Includes such classic systems as Apple, Atari, Commodore, Mits Altair, Osborne, Kaypro, IBM PC. Includes a discussion forum.
Meta Description: [ Erik S. Klein's Vintage Computer Collection includes such classic systems as Kenbak-1, Apple ][, Apple III, Atari 800, Atari 400, Mits Altair 8800, MITS Altair 8800BT, IMSAI 8080, Processor Technology Sol-20, Osborne 1, Telcon Zorba, Kaypro, Hewlet Packard, IBM PC, Compaq Portable, Commodore Vic-... ]
Ex-USSR and Russian computers - Photos and information on former USSR and Russian computers, and cpu`s.
Gaby's Computer Museum - Gaby's personal collection of computers, terminals, and other peripherals. Also has information about the CP/M operating system.
Meta Description: [ Gaby's Computer and Terminal collection ]
Gallery of Old Iron - A collection of old IBM System 360 and System 370 mainframes, along with some other systems and components.
Heimcomputer - A collection of home and personal computers, and video and TV game consoles.
Meta Description: [ Welt der Heimcomputer, Telespiele und Videospielkonsolen --- World of Homecomputer, Televisiongames and Videogameconsoles ]
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Home Computer Museum - Pictures, stories and specifications about many home computers and video games from a private collector Germany. Includes tips for collectors, price guide, emulators, and guestbook. English and German version.
HP Series 80 Web Site - Information about the HP-80 series of computers of the 1970s, including manuals, programs, and ROMs.
Ian's Dump - A personal collection of old computers and game consoles, including Atari, Sinclair, and Commodore.
Independent Commodore Library - Scans of manual and catalog pages, parts lists, and other documentation related to Commodore computers.
Jim's Computer Garage (museum) - A virtual computer museum providing visual and background stories, information about the collection, repair and restoration tips and tricks, and presentations and displays available for schools.
Meta Description: [ Virtual Computer Museum of Classic Systems and Related Peripherals ]
Kevan's Computer Bits... - A personal collection of old computers, calculators, video games and peripherals.
Meta Description: [ A collection of old computers, calculators, video games and peripherals ]
MagerValp's Computers - Descriptions and pictures of some old computers.
Mika's Computer Museum - A small collection of old computers in Finland.
Mind Machine Museum - Web museum of vintage computers, calculators, video games, and artifacts.
Meta Description: [ Web museum of vintage computers, calculators, video games, and artifacts ]
Obscure Pixels - A collection of old computers and game consoles.
Old Computers - A collector maintains a list of old computers, with additional information and downloads.
Meta Description: [ A virtual museum of computers from the 70-90s with details and pictures to scale. all items are a part of a real collection. ]
Old-Computers - An on-line museum with photographs, articles, and a collectors club with a forum and chat.
Paul Pierce's Computer Collection - A collection of mainframes and minicomputers, with photographs and commentary.
Phill's Computer Museum - A collection of early personal computer systems, with specifications and some photographs.
pugo.org - A collection of old computers and videogames.
Retro Computer Gallery - Computer collection comprised mainly of photographs of selected machines and software and magazines.
Meta Description: [ A Collection of photographs of classic computers, consoles, handhelds and magazines from Atari to ZX81 ]
Retrobits - Information about Commodore computers, including the Commodore Knowledge Base and the Secret Weapons of Commodore, as well as some information about the Tomy Tutor.
Ron's Mousepadmuseum - Ron's collection of mousepads, with many scanned examples.
Rune's PC-Museum - Rune's PC-Museum features personal computers from the past, including DOS, CP/M and others.
Meta Description: [ Welcome to Rune's PC-museum (former Rune's Computer Museum) now with an office computer wing and a home computer wing. ]
Sothius Homecomputer-Museum - A collection of computers and peripherals, and some game consoles.
Stefan's Old Computer Collection - A personal collection of old computers, screenshots of classic bootscreens, brochures, and downloadable vintage software. Also has a buy/sell computer market.
The Atom Review - A nostalgic review of this 8 bit computer based on the 6502 processor, with photographs, diagrams, and detailed descriptions. English and Dutch version.
Meta Description: [ Atom Review restoring an old 8 bit 6502 computer ]
The Classic Computer and Gaming Show - An annual trade show featuring old computers and video games, for collectors and enthusiasts.
The Commodore CBM-II Page - Photographs, advertisements, specification sheets and other information about Commodore CBM-II series systems.
The Computer Collection - Jay Jaeger's collection of computers, peripherals, and manuals, with photographs and descriptions.
The Cyberden - Catalog of floppy disk sleeves, with photographs.
The First Virtual Mousepad Museum - A collection of over 250 scanned mouse pads.
Meta Description: [ Everything you always wanted to know about mousepads with a large collectio
n of scanned pads ]
The Home Computer Hall of Fame - A collection of photographs, technical specifications, and other information about a variety of old computer systems.
The Machine Room - Many classic home and business computers from the 1970s and 1980s, including pictures, descriptions, technical details and links to other sources of information.
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 Museum of Contemporary Computers - Features a final year computer science project at the University of York in the UK. Includes a list of items, descriptions and photos.
Meta Description: [ A collection of over one hundred historical computers from minicomputers to supercomputers ]
The Nascom Home Page - A large collection of information about the Nascom computer kit of the early 1980s, with manuals, software, emulators, and photographs.
The Pocket Computer Museum - A collection of calculator-like programmable pocket computers from the 1980s, with photographs and trading information.
Meta Description: [ The Pocket Computer Museum ]
The Sharp MZ-Series - Information about the Sharp MZ-series computers, including photographs, software, swapping, and guestbook.
Meta Description: [ Detailed information about the Sharp MZ-40K, MZ-80K, MZ-80A, MZ-80B, MZ-700, MZ-800, MZ-3500, MZ-5600 ]
The Trailing Edge - Features a collection of 'rehabilitated' computer systems and want list.
The UC Davis Computer Museum - A computer science club collection of personal computers and related items, with photographs. Also includes a timeline of computer history.
The Virtual Museum of Computing - A virtual museum that 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.
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. ]
Uncle Roger's Classic Computer Resources - A collection of links to computer history resources for researchers.
Vintage Computer Fest Europa - European meeting place for those interested in old computers. [Available in multiple languages.]
Meta Description: [ The VCFe is a meeting of people who still have fun playing around with now obsolete computers. It takes place in Munich, Germany at the 27th and 28th of April 2002. ]
Vintage Computer Festival - An international event that celebrates the history of computing.
Meta Description: [ The mission of the Vintage Computer Festival is to promote the preservation of 'obsolete' computers by offering people a chance to experience the technologies, people and stories that embody the remarkable tale of the computer revolution. ]
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Vintage Computer Resource - Information resource for vintage computer collectors. Includes photographs, pricing information, and instructions for transferring files to older machines.
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von Neumann Machines - Photographs of some vintage computers and a large listing of computer history books.
Voyager's Infamous Computer Collection - A collection of obsolete computers, with photographs and technical specifications.
WF King's CBM page - Information about many of Commodore Business Machine's family of computers, with photographs of computers and old advertisements.
Wouter's Classic Computer Collection - Some photographs and descriptions of computers and components from the collection of Wouter de Waal, including Intel, Apple, and Sharp, with a long list of related links.
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