The document introduces Raspberry Pi, a credit-card sized single-board computer developed by the Raspberry Pi Foundation to promote computer science education. It describes the hardware components of Raspberry Pi including a System on Chip processor, microSD card for storage, and ports for connecting keyboards, mice and monitors. It also discusses the Raspbian operating system and popular programming languages like Scratch and Python used on Raspberry Pi. Finally, it outlines some example projects that have been built with Raspberry Pi like a supercomputer cluster and a quadcopter drone.