When the original Raspberry Pi was released in 2012 it kick-started a whole movement of hobbyists, developers, and educationalists who used the platform to create, hack and teach. The Raspberry Pi succeeded for three important reasons. First, it was a full computer on a little board, it had a desktop and you could write computer programs on it; Second, it had a set of GPIO pins, similar to those find on microcontroller platforms like the Arduino; Third, it only cost $35.
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