What was the first Computer you used?

I didn't get my first personal computer (486-DX2-50, overclocked to 66) until I was in my early 20s, (around '94), I already had my engineering degree by then.
Heh.. To this day, I still think those old 486s were the best built PCs ever!
I used to work in the comic industry, coloring comic pages digitally. We used an obscure (now dead) vector-graph program on early X86 hardware and DOS. We used everything from 286 on through to 486, as they each became available. When the 486s came in they felt like an exceptional upgrade and frankly, after all these years, there have been very few times I felt that much of a "level-up" since.
 
Commodore Vic 20 but I remember my friends and I would go to radio shack and the manager would let us play a couple games on the Tandy machines they had set up for demo /display, if anybody came in he would shoo us off and we understood so as to leave quietly so he could help any real customers.