We had a permanent TTY maintenance guy.
Despite the ink, oil, grease and paper fibres, he was, bizarrely, always immaculately suited and groomed.
I really don't know how he did it.
A pair of ICL-450s (IBM 360 equivalents) ran the entire CS department student load (apart from a handful of PDP8 and PDP11) the college's payroll and other agency work.
One had 128K, the other 256K.