These are a great British Gents concept to get Computing back to its roots and cheap enough for all. It mentions in the FAQ they could run off 4 AA battries.
It uses Linux and im sure the community which bulids up around it will provide a option of o/s taillored for those not to techy minded..

Possibly useful for those who need to supply a basic PC to pinas??

http://www.raspberrypi.org/faqs

A video explaining the concept and product

http://www.youtube.com/watch?v=pQ7N4rycsy4