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IBM mainframe
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<p>IBM mainframes are large computer systems produced by <a href="/facts/IBM/QszA7nwd">IBM</a> since 1952. During the 1960s and 1970s, IBM dominated the computer market with the <a href="/facts/IBM_700%2f7000_series/8Gh15FSj">7000 series</a> and the later <a href="/facts/System%2f360/7znvpy4K">System/360</a>, followed by the <a href="/facts/System%2f370/TRo1jaFw">System/370</a>. Current <a href="/facts/Mainframe_computer/nrBR6rWa">mainframe computers</a> in IBM's line of business computers are developments of the basic design of the System/360. </p>