12 Nov
2021
12 Nov
'21
3:03 a.m.
On Nov 11, 2021, at 4:30 PM, Thomas DeBellis
<tommytimesharing at gmail.com> wrote:
You had a 20 that would handle 600 students in 1977??? Yikes!! What kind of monster was
that and how did you do this without melting?
No, sorry for confusing the story. The 600 user machine (with 1000 connected terminals)
was the University of Illinois PLATO system, running on a pair of CDC 6500 mainframes.
Later versions got much bigger (on larger and faster CDC mainframes), but 600 users on a
pair of two-core machines each running at around two MIPS or so was a pretty significant
achievement.
paul