
The smallest, cheapest computer in the world —
Resembling little more than a credit card-sized scrap of exposed circuit board, the Raspberry Pi is a fully programmable PC that runs a free, open-source Linux operating system, plugs into any TV, can power 3D graphics and connects to the Internet.

Eben Upton, the UK-based University of Cambridge professor and inventor behind the wallet-friendly PC, says he set out to create a computer so affordable -- prices range from $25-$35 -- that every child in Britain could have one.
!["They're designed to be cheap enough that a child can buy on with their pocket money ... [and] cheap enough that you could equip a whole classroom for under a $1000," Upton (pictured) says.](https://media.cnn.com/api/v1/images/stellar/prod/121220064725-raspberry-pi-school.jpg?q=w_1920,h_1080,x_0,y_0,c_fill/h_447)
"They're designed to be cheap enough that a child can buy on with their pocket money ... [and] cheap enough that you could equip a whole classroom for under a $1000," Upton (pictured) says.

Upton speaking with CNN's Nick Glass. His invention will also makes a very good entry-level productivity computers for the developing world, he says.


