I really can't imagine getting DCs their own computer.
We have a wii though, most games are only for DH and me (and DSCs when they visit) - but DD, 2y9m, is great at yoga on wii fit plus! And yesterday she was copying DH on just dance, it was so so cute.
DH won a DS lite before the DCs were born, we've mostly stopped playing it as DD is a bit rough. When she's older I'll get her some games for it but she can share, as she will share the laptop. She has a toy laptop (little spelling games, numbers etc) which is fantastic, she'll often tap away on that doing her 'homework'!
Financially we're not in the position to consider having more than one anyway, and I just don't like the way all this tech takes over everything. ICT isn't a big part of our lives - we didn't even have the internet for 2 years, only got it last month for the food shopping! (no car)
FWIW we're not scared of ICT - it has its uses. I'm perfectly competent and will make sure the DCs are, but it's a very low priority in our family life.