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Everything was punched cards in those days. We’d have one day turnaround and you’d better have put sequence numbers on your cards or the comp center would just run dropped decks as is for your one and only chance. Always put a chill down my spine to see dropped decks at the curb in the puddles when the operators would bump the trolley with the decks as they went between programming buildings and the main computer building.

As an undergrad bio major at UCSD, I didn't feel drawn to the computer oriented major designated APIS (Applied Physics and Informational Sciences). The piles of cards were off putting (1974-1976). I taught a class in 6800 and 8080 microprocessors. We had "trainers" with 128 bytes of program memory. Programs were expressed on graph paper using op code pneumonics and manually assembled including the hex op code, memory addresses and relative "jumps". The student was expected to deliver working code for 23 assignments for a C grade. 3 extra credits for B. 5 extra credits for an A. Self-paced with classroom instruction. Primitive, but effective. 92% of my students were hired by DEC or IBM over the 1980 to 1983 timeframe tracked by the Regional Occupational Program. Today I would expect to deliver that kind of class with real editors, assemblers and compilers. It just wasn't an option at the time.