On Sun, 2026-03-01 at 14:18 -0600, Steve Lewis via cctalk wrote: > The first widely-deployed OS possibly was possibly CDC's > scope (meaning, more than a few hundred installations). Even MULTICS > had a > fairly limited install base (as far as I can determine).
Univac 1108 EXEC 8 could run simultaneous batch, time sharing, and real-time in 1968. At JPL we replaced six stand-alone 7094 and three 7094/44 Direct Couple with three Univac 1108s because 360/75 was only OS/MFT batch without time sharing, and SCOPE didn't offer time sharing at that time. On one 262,144-word machine we routinely had ten batch jobs and fifty time-sharing jobs running. Univac told us that was impossible, but they didn't want to talk to our guys who had made it work (almost all done by Tom Lang). Burroughs claimed they could do the job with an 6500, but they never got around to submitting a bid, and they apparently never got an 8500 to work.
