steve.do...@ccbcc.com (Steve Dover) writes: > Phil, we had one at Allstate Insurance until 1990. 2540 reader/punch. > I sure miss the chads, they were great fun in desks and cars. But I > do not miss hauling the 50 pound boxes around.
as undergraduate in the 60s ... univ. was using sense-marked cards (no.2 pencil) for class registration ... tables in the gym and students would get card for each class and fill in their information. Then cards were run thru and holes punched (solid manilla color cards) registration program was moved from 709 to 360 with 2540 reader/punch. all the cards were in large number of trays (about 3000 per ... about box & half) were fed into the 2540 reader. I wrote subroutine to feed into the middle stacker (stacker 3) ... registration program would validate the registration information and if it found a problem, a blank card would be "punched" behind it (middle stacker, stacker 3 was selectable from both the reader and the punch). The punch had been loaded with top-edge red-stripe cards ... so when everything was done ... it was possible to pick out class registration cards with errors ... by the top red-stripe edge card immediately following it in the tray. -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
