What is a Raspberry Pi? How does it work? How much does it cost?

What is the Raspberry pi? Where can you buy it? The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. The PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It has high-definition video. People can learn programming. Where can I buy one? The UK is exclusive. When will it be available in the U.S.
The RaspberryPI device is a little pc that plugs in the tv. How powerful is it? Can I add extra memory? How does it plug in? Will it run Android linux or Does the device support networking? Is there Wi-Fi? The Model B version of the device includes 10/100 wired Ethernet. There is no Ethernet on the Model A version (which we expect to be taken up mostly by the education market), but Wi-Fi will be available via a standard USB dongle. Where can I buy one? You can buy the Raspberry Pi through Premier Farnell/Element 14 and RS Components. Both distributors sell all over the world.
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