My first encounter, in the very early 70s at U.C.Swansea, Applied Science / Mechanical Engineering, was an ICL (maybe 1900E ? or was that a Car ?).
It would run FORTRAN and SORFOR (Southampton Fortran) using Punch cards. I also vaguely remember there being ALGOL and POP2.
I wrote my programs, punched the cards and then submitted them to the Computer Department twice weekly, before waiting excitedly and often disappointedly for the results – very often a syntax error… try again.
You needed to get the Program correct so it would run properly, before you could actually submit the Data for your Calculations.
The output came on a large wide roll of paper that you had to tear the holed edges off, and fold correctly.
In my final year we could use a MOP (Multi Online Programming Terminal) that eliminated the cards, and you could book time to sit in a small room with the MOP and enter your own data, a very noisy experience I seem to remember. I did a programme for Stress analysis of a live Back axle for a car/ light van.
Paul de Gues, June 2020