The document discusses the Raspberry Pi, a credit card-sized single board computer developed in the UK to promote basic computer science. It provides an introduction to the Pi's history, technical specifications, versions, programming capabilities and sample projects. While it lacks storage and power of a standard PC, the Raspberry Pi offers a cheap way to learn programming and electronics at $25-35 and can function as a basic computer or media center when connected to accessories. The document compares the Raspberry Pi to competitors like Arduino and concludes it has potential to inspire many to explore computing.