The TRS-80 made the Fortran IV language I learned in college obsolete.
The Fortran IV language made the Wang card reader I programmed in 9th grade look stone age. I programmed the equation for a slope on that Wang. Y=mx+b.
I really used that Wang, no bs.
http://www.oldcalculatormuseum.com/wang360.html
Then I went to the dark side and became a fracking oilman. What a fallen angel story.