OK, this is sort of going to date me here.
My first computer - an Atari 400, with a grand whopping 8K of RAM. How I remember learning how to program in Basic, just so I could get the text-graphics Defender game programmed in. And oh, the SPEED of that tape recorder drive - mmmm-hmmm, was that ever fast! Athlon 64, what?
Though the ancient computer up at the Uni that I played with once was the worst of the bunch, I think. You had to enter everything into the computer using punch cards....