@lefebvre If we don't count that mechanical typewriter I used to pretend coding in BASIC, then it's the #Atari800XL that once appeared beside the big TV that one day I came out of school.
I think even back then I already knew that some life-changing thing just happened.
Sorry, just got nostalgic, but it was THE defining moment of my life.
A very similar model (unfortunately not the original one but bought from a guy similar age as my dad) is now part of my #6502portable.