The Raspberry Pi is a powerfull computer -- it can drive HDMI displays, process mouse, keyboard, and camera inputs, connect to the Internet, and run full-featured Linux distributions.
The Pi has bi-directional I/O pins, which you can use to drive LEDs, spin motors, or read button presses.
Driving the Raspberry Pi's I/O lines requires an Operating System (OS)!
Drag the SD card with the OS from the right into the raspberry pi:
