List of computer system manufacturers

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The following is a list of notable computer system manufacturers.

Current

Defunct

• Acorn Computers
• Alliant Computer Systems - Ceased operations in 1992.
• Altos Computer Systems - acquired by Acer in 1990.
• Amdahl Corporation - A wholly owned subsidiary of Fujitsu since 1997.
• Amstrad
• Apollo Computer - Acquired by Hewlett-Packard in 1989.
• Apricot Computers - ceased operations in 1999.
• Ardent Computer - Merged with Stellar Computer to form Stardent in 1989.
• AST Computers, LLC - Exited the computer market in 2001.
• Atari Corporation
• Bell & Howell
• Burroughs - Merged with Sperry to form Unisys in 1986.
• Celerity Computing - Acquired by Floating Point Systems in 1988.
• Commodore International - declared bankruptcy in 1994.
• Compaq - Acquired by Hewlett-Packard in 2002. Defunct as a subsidiary as of 2010.
• CompuAdd - filed for bankruptcy in 1993.
• Computer Automation
• Control Data Corporation (CDC) - Shrank as units were spun off from 1988 to 1992; remainder is now Ceridian.
• Convex Computer - purchased by Hewlett-Packard in 1995
• Corona Data Systems - among the original "IBM PC Compatible" clone makers
• Cromemco
• Data General - was one of the first minicomputer firms from the late 1960s, purchased by EMC in 1999 for its innovative RAID array storage.
• Digital Equipment Corporation - Acquired by Compaq in 1998.
• Durango Systems Corporation merged with Molecular Systems in 1982 which went bankrupt in 1984
• Eagle Computer - ceased operations in 1986.
• Eckert–Mauchly Computer - Acquired by Remington Rand in 1950.
• Egenera
• Elonex — Sells tablets (as of 2011)
• Encore Computer - Acquired by Gores Technology Group in 1998 and renamed to Encore Real Time Computing, which Gores then sold to Compro Computer Services in 2002.
• English Electric - merged into International Computers Limited.
• eMachines - Discontinued by its current owner Acer in 2012.
• Everex - US subsidiary closed its doors in 2009.
• Evesham - merged into TIME Computers.
• Franklin Computer Corporation - exited computer hardware business and reorganized into Franklin Electronic Publishers.
• Gateway - Acquired by Acer in October 2007
• General Electric - Sold its computer division to Honeywell in 1970.
• Gericom - Acquired by Quanmax then merged with S&T
• Gould Electronics - Sold its computer division to Nippon Mining in 1988, who in turn sold it to Encore Computer later that year.
• HCL - Ceased PC manufacturing.
• Honeywell - Sold its computer division to Groupe Bull in 1991.
• International Computers and Tabulators (ICT) - merged into International Computers Limited.
• International Computers Limited (ICL) - now part of Fujitsu.
• Kaypro - filed for bankruptcy in 1992.
• Leading Edge - Mid '80s leader in PC Clone for the masses - Manufacturing done first by Mitsubishi then Daewoo
• Luxor AB - Ended in 1986 after being acquired by Nokia the previous year.
• Magnavox
• Magnuson Computer Systems - filed for bankruptcy in early 1980s.
• Maxdata (Germany) - Insolvent in 2008; warranty for existing products taken over by then the Swiss Belinea AG (see Belinea), now owned by Bluechip Computer. Warranty for Belinea products purchased before 1 November 2008 is not serviced anymore by Bluechip Computer.^[1]
• Mitsubishi Electronics - Closed computer systems division in 1990 Manufactured systems for Leading Edge and Sperry-Unisys
• MPC (formerly MicronPC) - Filed Chapter 11 bankruptcy on November 7, 2008. Efforts at reorganization failed.
• Multiflow Computer - Ceased operations in 1990.
• NeXT - acquired by Apple Computer in 1996.
• Nixdorf Computer - Acquired by Siemens in 1991, renamed Siemens Nixdorf Informationssysteme AG.
• Northgate Computer Systems - Acquired by Lan Plus in 1997, after filing for Chapter 11 bankruptcy in 1994; Lan Plus later renamed itself Northgate Innovations.

• Osborne Computer - Ceased operations in 1985; rights to the Osbourne brand were sold to Mikrolog.
• Packard Bell - is now a subsidiary of Acer.
• Processor Technology - Ceased operations in 1979.
• Psystar - Under 2009 permanent injunction to stop selling computers with Apple's Mac OS X operating system. Psystar's web site has disappeared.
• Pyramid Technology - Acquired by Siemens in 1995.
• Quantex Microsystems - Bankrupt in 2000.
• Radio Shack
• RCA - Exited the computer business in 1971; Sperry Rand took over RCA's installed base in 1972.
• Research Machines - Exited manufacturing in late 2013. Brand continues as a services company.
• Remington Rand - Acquired by Sperry to form Sperry Rand in 1955.
• Sanyo
• Scientific Data Systems - Acquired by Xerox in 1969.
• Sequent Computer Systems - Acquired by IBM in 1999.
• Sharp Corporation
• Siemens - Computer division (Siemens Nixdorf Informationssysteme AG) merged 50/50 with Fujitsu into Fujitsu Siemens Computers in 1999, then Siemens half bought by Fujitsu in 2009.
• Silicon Graphics - acquired by Rackable Systems in 2009, when Rackable then re-branded to SGI.
• Sinclair Research - acquired by Amstrad in 1986.
• Solbourne Computer - Acquired by Deloitte Consulting in 2008.
• Soyo
• Sperry - Merged with Burroughs to form Unisys in 1986.
• Sperry Rand - Dropped "Rand" from its name in 1978 and continued as Sperry.
• Stardent - Ceased operations in 1992.
• Sun Microsystems - Acquired by Oracle Corporation in 2010.
• Systems Engineering Laboratories - Acquired by Gould Electronics in 1981 and became Gould's computer division.
• Tandon Corporation
• Tandy Corporation - Previous parent company of RadioShack, produced the TRS-80 and Tandy 1000 and 2000 IBM PC compatible computers. Sold their computer division to AST Computers in the early 1990s.
• Tiny Computers - merged into TIME Computers.
• Texas Instruments
• Tulip Computers - changed its name to Nedfield NV in 2008, pronounced bankrupt in 3 September 2009.
• Vigor Gaming (USA) - Disappeared in March 2010
• VoodooPC
• VTech
• Wang Laboratories - acquired by Getronics in 1999.
• Wipro - Ceased PC manufacturing.
• Xerox - Exited the computer business.
• Zenith Data Systems - Merged With Packard Bell and NEC in 1996
• Zeos - merged into MPC Corporation in 1996, which in turn filed for Chapter 11 bankruptcy in 2008.
• Zepto Computers A/S (Denmark) - On 17 November 2009 Zepto Computer was declared bankrupt, after several tries to save the company.^[2]

• Market share of personal computer vendors

References

External links

• About.com list of desktop computer systems
• About.com list of laptop computer systems