A000073, Arduino Uno SMD R3 - Development Kit based on the ATmega328 MCU, features the Atmega8U2 programmed as a USB-to-Serial Converter

A000073, Arduino Uno SMD R3 Development Kit based on the ATmega328 MCU. 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