Tired of waiting in line to make corrections to my card decks I tried to convince management to get another key punch for programmers to use. My economic argument about the $50/month rental of a key punch machine vs the $600-$1200 a month salary of a programmer which showed that if there was at least one person waiting line for a spare machine to make corrections for as little as a cumulative 45 minutes a day it was worth getting another machine for programmer corrections still wasn't good enough because of various bureaucratic reasons; eventually they gave in and for a while our project got a temp worker and a key punch machine.
The Key punch machine printed on the top of the card what was punched so they could be read. Woe to the person who dropped a deck of cards that didn't have sequence numbers. Card decks could be sorted on a sorting machine and printed on an IBM 407 Accounting Machine. The Accounting machine was programmable by plugging in wires on the control panel board and was used in businesses for considerably more complex operations than printing a deck of cards. It could print at 150 cards a minute; for assembly language programs which could be a whole tray of cards this was slow.