I was writing code in 1962 for slow-as-molasses computers using core memory that filled gargantuan rooms in computer buildings.
Did later use those much newer eight inch floppies. They were a real step forward. Even stored some personal financial data on one of ‘em. I kept the floppy in my desk at work and then, after hours when everyone else had gone home, I would go into the computer room, slip in my personal floppy, then return to my desk and terminal, update all my financial data, print it out, then remove the big ol’ floppy, return it to my desk, and go home. That was probably in the late 1970’s or early 1980’s. Nobody ever knew.