Standard Modular System: Difference between revisions

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Replacing IBM_1401_backplane.agr.jpg.jpg with File:IBM_1401_backplane.agr.jpg (by CommonsDelinker because: Robot: Removing double file extension).
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File:SMS card with power transistors.agr.jpg|Another 1401 SMS card, this one with power transistors. It was used to drive print hammers on an [[IBM 1403]] line printer.
File:IBM 1401 card cage 2.agr.jpg|IBM 1401 card cage
File:IBM 1401 backplane.agr.jpg.jpg|[[Wire wrap]]ped [[backplane]] the same card cage
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