A new version of the small single-board Raspberry Pi computer (Model A) has gone on sale in Europe at just £16.
The Model A was designed for power-efficiency, but lacks some of the features of the Model B version, such as an Ethernet port.
The Model A has only one USB port and less memory than the Model B, which costs around £23.
According to the Raspberry Pi Foundation, the latest version of the computer is suitable for projects involving robotics and remote sensors or which rely on solar power.
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The Raspberry Pi Foundation said the Model A fulfills the promise it made to make a computer for around £15 when the first prototype Raspberry Pi computers were unveiled in 2011, according to the BBC.
The Model A will be available only in Europe, but the foundation said this restriction will be lifted soon.
More than one million Raspberry Pi computers have been sold since the official launch in February 2012.