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(Hence I know it, eventhough I'm not an old timer )
02/26/2015, 02:21:57

    Ramillies writes:

    We also have a big lot (several thousand) of empty punched cards ... so I can imagine which edge is the "9" .

    [ But what did I not know is that the "face down, 9 edge first" was inscribed on IBM card readers. ]





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