What is Raspberry Pi? Raspberry is a new (one year old), ultra small (credit card size), and cheap (35USD), Linux computer. The CPU is an ARM processor at 700MHz with 256 MB (typeA) or 512MB (typeB) of RAM.The flavors of Linux for Raspberry are Debian(Raspbian), Fedora (Pidora), RISC OS 5, Arch Linux ARM (derivate de Arch Linux). All in this article is dedicated to PIDORA. What a Raspberry Pi doesn’t have?Don´t have Hard Disk but have SD Card, which is enough for Raspberry. Don´t have real time clock, but we can make one with ntp (network time protocol) server. Don’t have a case included, you must buy apart.The fact of don´t have mechanical parts, such us fan coolers or hardisk makes Raspberry strongest,  with null hardware maintenance, and with very low electrical consumption (It’s Ecological).