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About: IBM 2501     Goto   Sponge   NotDistinct   Permalink

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The IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 and IBM System/3 minicomputers. 2501 models can read 80-column cards at either 600 or 1000 cards per minute (CPM). The 2501 is no longer sold, but is simulated in software on current IBM systems.