Tiny computer generates big demand
17 April 2012 Last updated at 12:12 BST
A £25 computer which is the size of a credit card has been designed to develop schoolchildren's interest in programming.
The Corby company which makes the Raspberry Pi says it already has 250,000 customers on its waiting list for the computer which it has started sending out to schools.
The level of interest generated by the product has exceeded all expectations, it said.