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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Honeywell 1800-II
1964
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Honeywell: The Multics System
1975
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I.C.T. 1900 Data Processing System
1964
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IBM 1401 Programming Systems
1959
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IBM 1440 New Low Cost Data Processing System
1962
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IBM 705 EDPM Electronic Data Processing Machine
1955
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IBM 705 Magnetic Cores for Memory in Microseconds in a Great New IBM Electronic Data Processing Machine for Business
1954
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IBM 709...A Powerful New Data Processing System
1957
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IBM Presents the 650 Magnetic Drum Data Processing Machine
1955
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IBM System/360
1964
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