In 1975, my high school computer lab (Maryland USA) had 3 computing devices/terminals. One was a Teletype connected to an offsite mainframe via an acoustical modem. Our class assignments were on this. The other were programmable desktop computing devices, similar to the programmable calculators of the era, but these were desktop size. We referred to them as big momma and big daddy. None of the students knew how to program them, the teachers knew very little about them.
I breifly attempted to learn how to use big momma. It was about the size of an Apple II, but the keys were more like a programmable calculator. It had a thermal printer about 6 inches wide. It probably had an LED display, but I'm not sure. I believe that it was Japanese. I don't remember what I did, but I did manage to get it to print some Asian characters on the printer.
I can't remember much more, but if I saw big momma in a lineup I could probably pick it out.
Does anyone know the history of these types of calculators? They were probably very expensive, and obsolete when the HP-65 and TI-59 came out.
It was similar to this, but this isn't it:
Edit: No floppy. Large magnetic cards (sorry, this slipped my mind since I never used the cards). Probably did not have a QWERTY keyboard. Alpha chars were probably accessed via option/shift keys. It had little resemblence to a personal computer (although I had never seen a Personal Computer at the time).