Nowadays you would probably need to dig out your granddad’s old
IBM PC
Hey, what d'ya mean grandad? 🤨 😜
My 2nd PC as a kid, after the Commodore P.E.T. (with 8" floppy + tape drive [ "Press Play on Tape 1"]) was an original IBM PC with dual floppies, first upgrade was Electrohome colour monitor and individual punch down memory kit with loose chips in a tube.
I still have the Keyboard in the garage (which is still the best keyboard ever IMO, just like a Selectric typewriter), the PC itself is buried in parents' attic, along with original boxes of IBM PC DOS, BASIC, FORTRAN, and games like Micro$oft Decathlon, Temple of Apshai, and Kings Quest. Some of those are now on Steam.
Even used the PCJr (like the one in the photo) at summer camp at the IBM Country Club in Markham.
Still have original M$ Arcade that came with the Model 25 that includes Asteroids, BattleZone, Centipede, Missile Command, and Tempest. I transfered it from floppy to file and it still plays on Windows from 3.1->95,98,2K,ME,Vista,7,8,10 & 11* , with just a few tweaks mainly for speed, bit more for 11.
My Grandad's PC (which would, I guess, stand for Pocket Calculator) was one of these which I used to love to play with, along with a slide-ruler;