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.
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The High Speed Flexible Proved GE 210 Data Processing System
1960
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The HYCOMP Hybrid Analog/Digital Computing System
1964
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The New General Electric GE 210 Data Processing System
1959
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The Sigma Family
1967
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The UNIVAC 494 real-time system operation big time in real-time
1966
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The Univac Data Communications System
1957
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The Univac System
1948
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Univac 1004 II and Univac 1004 III
1964
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UNIVAC 1108-II The Big System With the Big Reputation
1965
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UNIVAC 9000 Series. UNIVAC 9200 and 9300 Systems Facts and Figures
1967
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