The folks who built the Raspberry Pi knew they had a great idea, but they probably didn't anticipate just how successful it would be. The Raspberry Pi Foundation today is celebrating the computer's first birthday, a million devices sold, and countless DIY and programming projects completed.

The credit card-sized, ARM-based computer was released on Feb. 29, 2012 and can be purchased for $25 or $35 depending on the model. In a blog post titled "Happy birthday to us!" foundation community manager Liz Upton wrote that today is "as near as we can get [to the anniversary date]; we launched on a leap day last year. We’re going to have a really great party in 2016."

"We never thought we’d find ourselves in the position we’re in today, with a million Pis sold, a sprawling community, real evidence that kids are picking the Pi up and learning with it, and new friends from all over the world."

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