What age is too young?

Our son's 7th Birthday was on the 13th. We hummed and hawed over what to get him. At first we were going to go with the old rule of thumb that to a 7 year old the more presents the better. We had a budget and were going to spend it on several smaller items but then saw that the new Nintendo DS lite was on sale as Costco and included 2 games and a case. We were a little worried that he might be too young for such an expensive toy but decided that he really is a very responsible little guy and would probably go ga ga over it. Sure enough he did. But now guess who wants one in July for her 4th Birthday?

What's even more shocking is that the little princess is actually very good at working the thing. Infact, she can play some of the games better then Mom or Dad. Her favorite pass time is building puzzles, she's at an age 6 and up level right now. The puzzle games on the DS can be pretty tricky but she is catching on fast.

So what age IS too young for technical devices or are all kids just born knowing how to program a computer now a days.