To answer your stated question about how many computers are normal for a family of three, the answer is one computer. The Kaiser Family Foundation (using data from the US Department of Commerce) reports that although 90 percent of children in 2009 have access to a computer at home, only 36 percent of children ages 8-18 have their own computers in their bedrooms. So, most children are using a shared family computer in their homes.
Hmmm a ja ze znajomych mi rodzin, nie potrafię wskazać żadnej, w której bylby tylko jeden komputer a dzieci nie mialyby swojego osobnego komputera/ów. Czy to taka specyfika Polski.
via: Should my family have more than one computer ?