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BUNCH

The group of mainframe computer competitors to IBM in the 1970s became known as the '''BUNCH''': Burroughs Corporation|Burroughs, UNIVAC, NCR Corporation|NCR, Control Data Corporation, and Honeywell. These companies were grouped together because the market share of IBM was much higher than all of its competitors put together. During the 1960s, IBM and these five computer manufacturers, along with RCA and General Electric, had been known as "IBM and the Seven Dwarfs." The description of IBM's competitors changed after GE's 1970 sale of its computer business to Honeywell and RCA's 1971 sale of its computer business to Sperry, leaving only five "dwarfs". Fortunately, their initials lent themselves to a new acronym, BUNCH.

Where are they now?

Burroughs & UNIVAC: In September 1986, after Burroughs purchased Sperry Corporation|Sperry (the parent company of UNIVAC), the name of the company was changed to Unisys.NCR: In 1982, NCR became involved in open systems architecture, starting with the UNIX-powered TOWER 16/32, and placed more emphasis on computers smaller than mainframes. NCR was acquired by AT&T in 1991. A restructuring of AT&T in 1996, led to its re-establishment on 1 January 1997, as a separate company. In 1998, NCR sold its computer hardware manufacturing assets to Solectron and ceased to produce general-purpose computer systems.Control Data Corporation: Control Data Corporation is now Syntegra (USA), a subsidiary of United Kingdom|British company BT Group's BT Global Services.Honeywell: In 1991 Honeywell's computer division was sold to the French computer company Groupe Bull.

Other mainframe manufacturers during the 1960s and 1970s

- Scientific Data Systems (later known as Xerox Data Systems after its purchase by Xerox in 1969) also sold mainframe computers, but with around 1% marketshare, it was not a major factor in the marketplace. Xerox closed the division in 1975, with most rights sold to Honeywell.
- In 1976, Cray Research (a company supported by Seymour Cray's former employer Control Data Corporation), released the Cray-1 Vector processor|vector computer.
- Digital Equipment Corporation (DEC) was founded in 1957 to manufacture computer components, and made many small computers, notably the Programmed Data Processor|PDP series. These computers were classified as minicomputers rather than mainframes, but often competed for the same business.
- Hewlett-Packard (HP) was founded in 1939 manufacturing advanced electronic equipment. In the mid-1960s HP started producing minicomputers, which competed with mainframe computers.

References

Category:Computer companies of the United States

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