Due to massive amounts of caffeine & sleep deprivation, Mr. Self Destruct said: Sounds like you might be talking about the TI-59 (? did the TI-58 have this capability also? I've never seen a 58). I used one in high school... really neato once you got used to TI's programming practices. It also had a 32 or 40 column thermal printer that the calculator mounted to, and then the printer served as the base. The mag strip was mainly for data storage or user-created programs, as it also had the capability to use pre-programmed ROM cartridges. They even had a cartridge of games! ISTR a football game that printed out all the team stats on the printer. A very interesting piece of hardware. Hope this helps, "Merch" -- Roger Merchberger | If at first you don't succeed, Programmer, NorthernWay | nuclear warhead disarmament should zmerch(a)northernway.net | *not* be your first career choice.