First computer I programmed was an IBM system/360 using Fortran IV WATFIV. Hardly a personal machine. the "display" was a 1 "line" keypunch machine (1 color... light cream), a 029 card punch, the most often used key was the "dup" key (cannot forget that... the dup key was always worn out... it was blue - when it was still there!) In those days, the size of a program could be stated in lines of code or optionally in pounds

a 2 pound program started to be respectable. That was 50 years ago!.
My first personal computer, that I owned, was a "Leading Edge", late 1983, it had a couple of floppy drives and it ran faster than the standard IBM PC, 7Mhz instead of 4.77. I bought it a few days _after_ I bought a copy of Turbo Pascal. Yes, I bought Turbo Pascal before I had a computer to install it on.
One thing I vividly remember was the amazing feeling of being able to edit, compile and run, all in one shot after having used punched cards and an IBM 360. Not even St. Peters could offer something better than that.

Before that I did play with a few other computers but, they belonged to friends, among a number of them I remember the Sinclair ZX81, TI 99, TRS 80 and Apple I among others.)