Comment by blendo
Back in the 80s, the Tek 4115 (color, 1280x1024) was so much fun for a young programmer working at RADC/Hanscom AFB.
Mandelbrot sets and Towers of Hanoi were so exciting to write in Fortran (I think Fortran 77), running under, iirc, CP/M.
From same museum, in case people are interested in a 4115 brochure https://vintagetek.org/wp-content/uploads/2022/03/4115B-broc...