[lettercarrier]

Since each punch card meant something, you really learned code. Watching out for memory and keeping track of registers was paramount (COMPASS was my HS and Freshman initial class). Syntax killed, but was overcome by hand writing code. The science of CPS courses had to be taught just to be able to pass the class via assignments. Writing an OS with punch cards was an entire term.

We could get same day runs if we paid more or had our own account. There were 3 tiers of cost..