attpersonalcomputer

26_0052790 Rohr Collection Image

from SDASM Archives

• Chuck Walla said:

  These are DOS machines with 5¼-inch floppy drives. The one in the foreground is some kind of IBM PC/AT and probably employs an Intel 80286 CPU. The screen might be a CGA screen. The displayed stuff looks white (phosphor) to me. I think it's a WordPerfect screen. Does this screen look like XY Write or Microsoft Word? There's a glare shield over the cathode ray tube face. There's a glare from something in spite of the attenuator.
  
  The person in the background is using what looks like an AT&T personal computer, manufactured by Olivetti.
  
  Networks were sometimes proprietary. I worked with 2.5 megabits per second Arcnet about this time. Newer installations had 10Base2 10 megabits per second ethernet. Both of these ran over 50-ohm chnaracteristic impeadance coaxial cable.