On 3/10/23 10:20, Bill Gunshannon via cctalk wrote:
The first mainframe I worked on was single user,
single tasking.
S/360 DOS provided for one "background" memory partition and two
"foreground" ones. Batch submissions would be background, with some
installations using the smaller foreground ones for interactive use.
I believe that one of the pioneers in this was IIT with their
Chicago-area high school operation. IITRAN using remote TTYs on a 360/40.
https://en.wikipedia.org/wiki/IITRAN
--Chuck