“Duemilanove” means 2009 in Italian. The Arduino Duemilanove, released in 2009 is a microcontroller board based on the ATmega168 or ATmega328. The one available It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
“Duemilanove” means 2009 in Italian and is named after the year of its release.