On 5/25/2016 8:48 AM, Jon Elson wrote:
The only /20s I ever saw were used as offline spool
printers and card
readers in large 360 shops.
At our school, University of Missouri, Rolla, they
purchased a 360/50 in
maybe 69 or so. Because of the nature of the order it couldn't be
delivered, and a 360/40 was delivered as a starter system.
I think the /30 was still not similar enough to the /50 to be useful to
get what they needed running so that deliver of the /50 would be
smooth. It may have been a capacity problem as well, as the /50 need a
large for the time disk subsystem. The comms were to be used for CPS
which only ran on the /50 I think.
McAuto in St. Louis used a lot of the /20's for their printer farm, and
that was the only place I ever saw one in use. They spooled tape to
printer in the use it was put to.