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Unisys Corporation (NYSEUIS), headquartered in Blue Bell,[3][4] Pennsylvania, United States, and incorporated in Delaware,[5] is a global provider of information technology services and programs.



Unisys was formed in September 1986 through the merger of the mainframe corporations Sperry and Burroughs, with Burroughs buying Sperry for $4.8 billion. The name was chosen in an internal competition when an intern, Charles Ayoub, came up with the UNISYS acronym from United Information Systems. The merger was the largest in the computer industry at the time and made Unisys the second largest computer company, with annual revenue of $10.5 billion.[6] At the time of the merger, Unisys had approximately 120,000 employees.

In addition to hardware, both Burroughs and Sperry had a history of working on U.S. government contracts. Unisys continues to provide hardware, software, and services to various government agencies.[citation needed]

Soon after the merger, the market for proprietary mainframe-class systems—the mainstream product of Unisys and its competitors such as IBM—began a long-term decline that continues, at a lesser rate, today. In response, Unisys made the strategic decision to shift into high end servers (e.g., 32 processor Windows Servers), as well as information technology (IT) services such as systems integration, outsourcing, and related technical services, while holding onto the profitable revenue stream from maintaining its installed base of proprietary mainframe hardware and applications.[citation needed]

Important events in the company's history include the development of the 2200 series in 1986, including the UNISYS 2200/500 CMOS mainframe, and the Micro A in 1989, the first[citation needed] desktop mainframe, the UNISYS ES7000 servers in 2000, and the Unisys blueprinting method of visualizing business rules and workflow in 2004.[citation needed]

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