The Raspberry Pi is a series of single-board computers developed by the Raspberry Pi Foundation, designed to promote computer science education and enable DIY electronics projects. Available in various models (Pi Zero, Pi 4, Pi 5), these credit-card-sized computers run Linux-based operating systems and feature GPIO pins for hardware interfacing, making them ideal for learning programming, building IoT devices, home automation, media centers, and robotics. Understanding GPIO numbering schemes, power requirements, and Python libraries is critical for successful project development.