A charity is hoping to develop and sell a bare-bones PC for just £15 in a bid to teach computer programming to children.

The Raspberry Pi Foundation, which is being headed up by David Braben, developer of space trading game Elite, says it exists "to promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing".

"Our first product is about the size of a USB key, and is designed to plug into a TV or be combined with a touchscreen for a low-cost tablet," the charity says.

Provisional specifications for the device include a 700MHz ARM11 processor and 128MB of memory. The mini PC is also expected to offer support for 1080p HD video playback along with USB (which was used to connected a keyboard and mouse via a hub), composite and HDMI outputs and a memory card slot. The Foundation says the PC will run open-source software, so it's likely to use Linux as its operating system.

"We expect this computer to have many other applications both in the developed and the developing world," said Braben.

The Raspberry Pi Foundation says it hopes to sell the system for $25, which is around £15. However, availability dates have yet to be released.