Scion was in Reston, Virginia, but Chuck was a professor at the University of Maryland as well. He eventually quit UMD to work at Scion full time. He's the reason I got the job, he was one of my UMD profs. The MicroAngelo was easy to program but expensive because it was basically a full computer. It had an onboard Z80 and 32K (later 64K) of RAM. I worked there from 1981 to 1983-ish, when they fell on hard times and had to lay a bunch of people off.