The Raspberry Pi is a series of small
single-board computers developed in the United Kingdom by the Raspberry Pi
Foundation to promote the teaching of basic computer science in schools and in
developing countries. The original model became far more popular than
anticipated, selling outside of its target market for uses such as robotics.
Peripherals (including keyboards, mice and cases) are not included with the
Raspberry Pi. Some accessories however have been included in several official
and unofficial bundles.
According to the Raspberry Pi Foundation, over
5 million Raspberry Pis have been sold before February 2015, making it the best-selling
British computer. By November 2016 they had sold 11 million units.
Several generations of Raspberry Pis have been
released. The first generation (Raspberry Pi 1 Model B) was released in
February 2012. It was followed by the simpler and cheaper Model A. In 2014, the
Foundation released a board with an improved design in Raspberry Pi 1 Model B+.
These boards are approximately credit-card sized and represent the standard
mainline form-factor. Improved A+ and B+ models were released a year later. A
"Compute Module" was released in April 2014 for embedded
applications. The Raspberry Pi 2 which added more RAM was released in February
2015. A Raspberry Pi Zero with smaller size and reduced input/output (I/O) and
general-purpose input/output (GPIO) capabilities was released in November 2015
for US$5. Raspberry Pi 3 Model B released in February 2016 and is bundled with
on-board WiFi, Bluetooth and USB boot capabilities. As of January 2017,
Raspberry Pi 3 Model B is the newest mainline Raspberry Pi. Raspberry Pi boards
are priced between US$5–35. On 28 February 2017, the Raspberry Pi Zero W was
launched, which is identical to the Raspberry Pi Zero, but has the Wi-Fi and
Bluetooth functionality of the Raspberry Pi 3 for US$10.
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