Nowadays computers, mobile phones, tablets and other recent gadgets are more and more used by young people. Despite the fact adults spend long time working online, children and teenagers still know technology creations really well, although their parents use them quite more often.
As my dad told me, teens (especially boys) in his time loved to build the computers trying to understand how do their machines work. So they found out what hard drive looks like, what to do if the mouse doesn't react, and how to connect the headphones.
But today children usually don't care about the internal device of their gadgets. Some of them even don't know how to copy or save a document or make a hardcopy. Before they learn it on IT lessons, the only thing teenagers know the best is logging in and out of their favorite computer game. They can't use the scanner or printer or connect the speaker or broadband either although everybody says the last generation is able to deal with the technologies better than adults.
To sum up, teens really do use computers often, but the set of skills they have is different from that one their parents do. This doesn't say that children are stupid and can do nothing with technologies - of course not. They can just do another kind of things unlike the adults, and it is if not OK, but normal and logical to be like that.