The Raspberry Pi is a credit-card sized computer board that plugs into a TV and a keyboard. It’s a miniature ARM-based PC which can be used for many of the things that a desktop PC does, like spreadsheets, word-processing and games. It also plays High-Definition video. Available in two versions; Model A and Model B.
Broadcom BCM2835 700MHz ARM1176JZFS processor with FPU and Videocore 4 GPUGPU provides Open GL ES 2.0, hardware-accelerated OpenVG, and 1080p30 H.264 high-profile decodeGPU is capable of 1Gpixel/s, 1.5Gtexel/s or 24GFLOPs with texture filtering and DMA infrastructure512MB RAM (Model B), 256MB RAM (Model A)Boots from SD card, running a version of the Linux operating system (supplied separately)10/100 BaseT Ethernet socket (Model B)HDMI video socket2 x USB 2.0 sockets (Model B), 1 x USB 2.0 socket (Model A)RCA composite video socketSD card socketPowered from microUSB socket3.5mm audio out jackHeader for GPIO and serial busesHeader footprint for JTAG connectorConnector for Raspberry Pi HD video cameraSize: 85.6 x 53.98 x 17mm
This is an open-source product designed to be supported by Internet-based user forums. As a starting point refer to the Official website at raspberrypi.org.