Introducing the latest Arduino board
The latest Arduino in the family is the Arduino Duemilanove (which means "2009") and includes 14 digital input/output pins of which 6 can be used as PWM outputs, 6 analog inputs, a 16 MHz crystal, USB connection, power jack, an ICSP header, and a reset button. The main difference between this and the last version, the "Diecimila" is that this version automatically selects the power source for the boards, dispensing of the old USB/External power jumpers and it also adds a way of disabling the auto-reset of the board, but includes a solder jumper just in case you need to re-enable it.
