Category: Mainframes
IBM Presents the 650 Magnetic Drum Data Processing Machine

1955
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At one time a computer was simply a computer. When, in the mid-1960s, firms such as DEC and Data General began marketing their mini-computers, the term “mainframe” (also known as “big iron”) arose to designate the larger general purpose machines provided by firms such as IBM, Univac, etc.

While there is no exact definition, it usually implies a machine capable of large-scale computing tasks demanding high availability, high I/O rates, large storage for online databases, and sometimes even the ability to run multiple operating systems simultaneously.
Brochure List: Mainframes Sort:
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A Management Guide to Third Generation Data Processing: B2500/B3500 Software Systems
1967
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A New Level of Computer Responsiveness. The New Burroughs B 2500 and B 3500 Electronic Data Processing Systems
1966
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All New Transistor RCA 501 Electronic Data Processing System
1958
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An Introduction to the Ferranti Mercury Computer
1956
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An introduction to the Ferranti Sirius computer
1961
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An Introduction to the UNIVAC File-Computer System
1951
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Burroughs B 5500 Information Processing System
1964
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Burroughs B2500 and B3500 Electronic Data Processing Systems. A New Level of Computer Responsiveness
1966
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Computer Progress at General Electric Now the Powerful NEW GE-235 Joins "The Compatibles"
1964
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Control Data 160-A Computer
1962
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