The Raspberry Pi is a credit-card sized computer that plugs into your TV
and a keyboard. It’s a capable little PC which can be used for many of
the things that your desktop PC does, like spreadsheets, word-processing
and games. It also plays high-definition video. We want to see it being
used by kids all over the world to learn programming. The full specifications for Raspberry Pi include an ARM1176JZF-S 700 MHz CPU, and 256 megabytes of RAM, 1080p30 h.264/MPEG-4 AVC high-profile decoder GPU, Composite RCA (PAL & NTSC), HDMI (rev 1.3 & 1.4)[54], raw LCD Panels via DSI[55][56]
14 HDMI resolutions from 640×350 to 1920×1200 plus various PAL and NTSC standards video output, HDMI audio,SD/MMC/SDIO card slot for on board storage, 10/100 Ethernet for network interface ,8 × GPIO, UART, I²C bus, SPI bus with two chip selects, +3.3 V, +5 V, ground, weight 45 gr,support operating system for Rspberry Pi Debian GNU/Linux, Fedora, Arch Linux[2], RISC OS.
The GPU hardware is accessed via a firmware image which is loaded into the GPU at boot time from the SD-card. The firmware image is known as the binary blob. While the associated Linux drivers are closed source.[72] Application software use calls to closed source run-time libraries which in turn calls an open source driver inside the Linux kernel. The API of the kernel driver is specific for these closed libraries. Video applications use OpenMAX, 3D applications use OpenGL ES and 2D applications use OpenVG which both in turn use EGL. OpenMAX and EGL use the open source kernel driver in turn.
Ref:
www.raspberrypi.org
http://spectrum.ieee.org/podcast/geek-life/hands-on/arduinos-playmate
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