Les wrote:
Was the number actually punched in the card, or was it only printed on the top of the card? Printed on the top of the card would not require any modification of the card reader routine, and would not eat up columns on the punch card. If I remember correctly, you only had 80/card.On my punch cards they did. Every card had a number sequential to the sequence. The punch we used inserted them automatically. Well, the programming card did. The reference number used for calls may have beendifferent, but I don't remember it.Our programs were HUGE, multiple trays. Each tray was denoted by the color of the diagonal line. We had 8 colors, so I guess we never had more than 8 trays, because I don't remember pairs of lines anywhere. Regards, Les H
If the number was punched, I could picture a program that would re-order the program based on the number, if the cards were messed up, but you would probably have needed a mini-computer to do that, and feed it to the mainframe.
Mikkel -- A: Because it messes up the order in which people normally read text. Q: Why is top-posting a bad thing?
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