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IBM 407
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==External links== *[http://www.bitsavers.org/pdf/ibm/punchedCard/AccountingMachine/22-5765-7_407_Operation_1953.pdf IBM 407 accounting machine] (PDF) *[https://web.archive.org/web/20110219021336/http://www.bitsavers.org/pdf/ibm/punchedCard/Training/A24-1007-1_IBM_Functional_Wiring_Principles_Feb66.pdf IBM Functional Wiring Principles] (PDF) *[http://www.columbia.edu/acis/history/407.html Columbia University Computing History: The IBM 407] *[https://web.archive.org/web/20070101062514/http://www-03.ibm.com/ibm/history/exhibits/vintage/vintage_4506VV4007.html IBM Archive: IBM 407 photo] (in photo, the box at left side is not part of the basic 407) *[https://archive.today/20130104202040/http://www-03.ibm.com/ibm/history/witexhibit/wit_definitions.html IBM Archive: IBM 407 control panel photo] *[http://www.ed-thelen.org/comp-hist/HzG-407-Sound.wmv Audio clip of IBM 407 in operation] [[Category:IBM unit record equipment|407]] [[Category:Computer-related introductions in 1949]] [[Category:Impact printers|IBM 0407]]
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