those are magnetic strips storing programs. you would read the strip in,
then insert it in a special holder below the row of function keys on the
calculator. you could label the strip so you remember what each function
key is programmed for. HP first introduced this with the HP67 (pocket
version) and HP97 (desk version) and TI followed suit with their own
equivalent. This was probably vintage late 70's or early 80's?
- glenn
At 02:00 AM 5/8/97 -0400, you wrote:
Hi, I saw the post on the old calculator so here's mine:
A buddy of mine used to work at a Salvation Army so I got
a lot of stuff that they threw out. One was an old TI
calculator that had these strips you fed in one side and
a motor pulled them through (almost like a credit card reader)
What is it? How old is it?
Les