it's also very randomly skewed in time depending on your town/city...chicagoland and just a few years older than you guys, but our school district had gotten a few computers and so we saw them and started monkeying with them...and there were Radio Shacks in the area, and Bell Labs a few miles away (in Illinois, secondary site), so lots of math-ish parents. Just random circumstance from the view of a kid.

Video game consoles were very big in the early 80's so I don't think computers were much of a stretch.