Majored in Chemistry back in the old days. 26 hrs physics, 23hrs math and 70 odd hrs in chem counting labs. We didn't have calculators. Ahh, but we had the slide rule. Try storing something on that. Most of those tech profs handed out tests when you got to class that you completed on paper they handed out. You could bring a little scratch paper, but that's about all you could bring with you. Slide rule and scratch paper. Scared to try to cheat on chem profs like Sheely and Henley. Most made up new tests each semester. You could look for similarities as some old tests floated around, but generally hard to get. Sounds like much harder to cheat back then, especially with class sizes of 15-30. Profs were in control usually.