On Wed, 1 Nov 2006 14:59:01 -0600, Eric N. Bielefeld <eric- [EMAIL PROTECTED]> wrote:
>If I remember correctly, the 2560 could read about 300 cards per minute. >Compare that to the 2540 (I think) being able to read about 1,000 CPM. >Punching on the 2560 was much slower, but I can't remember. Offline Patrick Falcone gave me link http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3115.html which states "The 2560 can read up to 500 cards per minute, punch 160 columns per second and print 140 positions per second." That is faster reading than I remember, but that was from a Mod 115 announcement. There may have been a faster 2560 by the time the 115 came out. (I didn't remember there ever was a Mod 115.) >... I spent many a >day sorting decks of cards and running them through the 2560. The neatest thing I remember about the 2560 sort (which was a Sort/Merge program) was if you messed up the directions and put the cards in the wrong hopper you increased the sort time a little. The number of passes went up by 1 or 2. If you made the same sort of error (so to speak) on the column sorters you got to start the whole process over. Pat O'Keefe ---------------------------------------------------------------------- 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
