IRC (Internet Relay Chat) via green screen dumb terminals was all the rage when I was at UCONN from 90-94. Even as a Computer Science and Engineering major, I didn't have my own PC in he early 90s. We did work on Macs in a lab, UNIX workstations in a lab, and on x86 machines in a lab or at the library.
We had PCs and floppys when I was in college, so I can't relate to those who had to deal with punch cards. I have done mainframe work though almost the entirety of my professional career even having never had exposure to mainframes in college. While there are much fancier front ends to the mainframe now, I still am most comfortable with the old regular green screen emulators. Tape isn't generally a thing anymore for mainframes unless you are offloading data for secure backups. Even then tape is not necessarily the go to media. Storage costs finally came down to the point that you didn't need to offload data onto 'cheaper tape'. I also had exposure to the old 'Green Bar printers' that were tied to mainframes back in the day.
Once we started learning how to mess with Dos and Windows 3 we would code and load up obnoxious things onto lab and library computers that would do things such as remap the keyboard or randomly invert the screen every 10 minutes. Very useful endeavors. The internet existed when I was in college, but there were no web browsers or anything like that. It was still mostly an academic endeavor, useful only to share data across networks. Command lines only.