When talking about first computers, does analog count or we speaking digital only?
If analog counts, I was flying in B-52 flight simulators in 1966, at age 9. A 5000 sqft room filled with rows of relays, tubes, solenoids, and a real looking cockpit.
If we are saying digital, a Burroughs B6700 in 1972, then a PDP-11 running UCSD p-system in 1975 at, of course, UCSD.
Then ran SAIL, Fortran, Algol, and an inferior Pascal on Decsystem-10.
Was able to hack DecWar.
First computer I could keep at home , an IMSAI with a Z80 , 32k, CP/M and Microsoft Basic.
Had brief respite from programming after being expelled from medical school for cracking University of Texas Southwestern at Dallas administrative passwords and hacking DecWar a bit more. Returned after negotiating a deal to tell them how it was done.
Now, board certified in Clinical Informatics ..... And off giving a talk in Nashville tomorrow at electronic healthcare conference... So I'm not home to try out the new firmware......