This document discusses the Raspberry Pi, a credit-card sized computer that was created by the Raspberry Pi Foundation to promote teaching computer science in schools. It provides a brief history of how the Raspberry Pi was developed by the University of Cambridge. It also outlines the specifications of different Raspberry Pi models, supported operating systems, how it works, applications, advantages like being energy efficient and affordable, and disadvantages like compatibility issues. The conclusion is that the Raspberry Pi is a good way to provide affordable computer education.