Happy Mainframe Day!
OTD 1964: IBM announces the System/360 family. 8-bit bytes ftw!

Shown: Operator at console of Princeton's IBM/360 Model 91.

@aka_pugs The high school I went to had several terminals connected to an IBM 360 at the University of Minnesota. I started to learn how to code using those terminals. This was in the late '60s.

@mappingsupport @aka_pugs What sort of terminals? Teletypes? And they had leased lines to the university?

360/91 was the high end mainframe at the time, that thing could have megabytes of RAM made by people manually stringing cores on wires.

@mike805 @aka_pugs The terminals were teletype. My recollection is 30cps. Saved hardcopy of my work on 1" wide yellow paper tape.