On Jul 15, 2016, at 9:08 PM, Chuck Guzis <cclist at
sydex.com> wrote:
On 07/15/2016 05:47 PM, Paul Koning wrote:
Graphics terminals were quite rare in the early
1970s, at least at a
cost allowing them to be installed in the hundreds, and with
processing requirements low enough for that. I remember, around the
same time, the Tektronix 4010. But that was far less flexible; it
could only draw, not erase, unlike the PLATO terminals.
Surely you remember CDC IGS from the 70s. I loved watching the displays
being drawn on those big radar CRT displays--one color while drawing and
persisting in another.
They were "terminals" of a sort, no?
IGS? Two colors? Don't recognize that. There's the 6000 console (DD60), very
expensive, requiring a dedicated processor to feed it, and limited to uppercase text only
plus very small amounts of graphics (a dot at a time, 3 microseconds per dot).
paul