> Those old keypunch machines had a limitation: they weren't supposed to be > used to duplicate more than 6 punches in any column, else the knives would > jame and cause serious problems. IIRC it was somethng to do with the power > supplies to the knives.
On some of the punching equipment, it had to do with a mechanical linkage that would distort if too many holes were punched at once. The dies would not make clean holes, and could get stuck. -- Will ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
