In the 80's I went to a college's "yard sale" and picked up a HP 9100B programmable calculator; they have core memory. When I plugged it in I remember it starti

In the 80's I went to a college's "yard sale" and picked up a HP 9100B programmable calculator; they have core memory. When I plugged it in I remember it starting to run the program it had in it, not missing a beat. I still have it, maybe it's time to see if it still works.