>I actually used the 9845B (Model T) for Space Shuttle flight support >(STS-2 through STS-24). I worked at Rockwell International Space Systems >Division in Downey, California (now owned by Boeing). I started out in >1979 doing bean-counting work. I wrote BASIC programs that create bar >charts, plots, and tabulated data for the Flight Systems Design and >Performance department. My manager, Bill Schleich, was the one who >developed the shuttle's roll maneuver shortly after lift-off.