Raspberry Pi is a ARM based single board computer (SBC). Small credit card size makes it ideal for many use full application. This ARM based SBC runs many linux based OS. This Raspberry pi is developed and made in UK. Raspberry pi Model B comes with 512MB RAM, 2 USB Host, one RJ45 socket for LAN and micro usb connector for power. This board also has some GPIO for connectivity and supports IIC, SPI and UART for communication. HDMI port and RCA jack for default TV output and 3.5mm audio socket.