These included: IBM System/7 (semiconductor memory, process control, incompatible replacement for IBM 1800 IBM Series/1 IBM 3790 IBM 8100 IBM System/3 (Introduced 96 column card) Midrange computer is a designation used by IBM for a class of computer systems which fall in between mainframes and microcomputers. ==IBM System/360== All that changed with the announcement of the System/360 (S/360) in April, 1964.
IBM mainframes are large computer systems produced by IBM since 1952.
Current mainframe computers in IBM's line of business computers are developments of the basic design of the IBM System/360. ==First and second generation== From 1952 into the late 1960s, IBM manufactured and marketed several large computer models, known as the IBM 700/7000 series.
It is generally thought that the first operating system used for real work was GM-NAA I/O, produced by General Motors' Research division in 1956.
During the 1960s and 1970s, IBM dominated the large computer market.
Current mainframe computers in IBM's line of business computers are developments of the basic design of the IBM System/360. ==First and second generation== From 1952 into the late 1960s, IBM manufactured and marketed several large computer models, known as the IBM 700/7000 series.
The 7010 was introduced in 1962 as a mainframe-sized 1410.
These included: IBM System/7 (semiconductor memory, process control, incompatible replacement for IBM 1800 IBM Series/1 IBM 3790 IBM 8100 IBM System/3 (Introduced 96 column card) Midrange computer is a designation used by IBM for a class of computer systems which fall in between mainframes and microcomputers. ==IBM System/360== All that changed with the announcement of the System/360 (S/360) in April, 1964.
During the 1960s and 1970s, IBM dominated the large computer market.
(Some IBM 7094s remained in service into the 1980s.) ==Smaller machines== Prior to System/360, IBM also sold computers smaller in scale that were not considered mainframes, though they were still bulky and expensive by modern standards.
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