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Sperry Rand's Third-Generation Computers 1964-1980
Sperry Rand failed to develop a successful minicomputer and, faced with IBM's dominant market position by the end of the 1970s, struggled to maintain its position in the computer industry.
Before the B5000: Burroughs Computers, 1951-1963
Like many companies entering the computer industry, Burroughs began by working on US government contracts and entered the general-purpose computer market, but pioneering work on transistor computers for military contracts was not immediately transferred to the commercial marketplace.
After the B5000: Burroughs Third-Generation Computers 1964—1980
Although Burroughs experienced moderate success with its medium- and small-sized computers, the company's large-scale systems and supercomputers were plagued by product delivery delays and quality issues, leaving it at a serious disadvantage in the competitive market of the 1980s.
Sperry Rand's first-generation computers, 1955-1960: hardware and software
The article describes the major vacuum tube computers and the supporting software developed by Sperry Rand during the later 1950s.
Sperry Rand's Transistor Computers
The paper describes the major transistor computers Sperry Rand developed and describes the challenges faced in producing these computers.
Against the Current: The Sperry-Burroughs Merger and the Unisys Struggle to Survive 1980-2001
Burdened by heavy debt, battered by the 1991 recession, Unisys persisted and went on to develop new business strategies to meet the needs of server-based computing.