Regarding this, Microsoft had it's name on Flight Simulator at or around 1982.
The title itself goes back to 1979 as FS1 running on both Apple and Tandy
computers. Sublogic was of course the producer of FS at the time. We can thank
Bill G., but we also owe one to Bruce Artwick. He's the one who started it all.
Here is a free and very good site about FS History.........
http://simflight.com/~fshistory/fsh/index.htm