The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It 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.
The RPi is more than that, its more than the sum of its parts. You can press into use for just about anything from a Car-puter, media centre pc to any sort of NAS / web / data server. Its GPIO is great for hooking up practically anything to and of course lets not overlook its original purpose as an educational tool.
I think its main success factor is the price, I got mine from ebay with a case thrown in for only £30 delivered! I doesn't come packaged with anything else and you do need a few bits and bobs to get it going, but none of it is bespoke and I have managed to scrounge all of it:
And thats it, no additional outlay
Chip | Broadcom BCM2835 SoC full HD multimedia applications processor |
CPU | 700 MHz Low Power ARM1176JZ-F Applications Processor |
GPU | Dual Core VideoCore IV® Multimedia Co-Processor |
Memory | 512MB SDRAM |
Ethernet | onboard 10/100 Ethernet RJ45 jack |
USB 2.0 | Dual USB Connector |
Video Output | HDMI (rev 1.3 & 1.4) Composite RCA (PAL and NTSC) |
Audio Output | 3.5mm jack, HDMI |
Onboard Storage | SD, MMC, SDIO card slot |
Operating System | Linux: wheezy-raspbian |
Dimensions | 8.6cm x 5.4cm x 1.7cm |