ARDUINO UNO REV3 MICROCONTROLLER ATMEGA328P - Programmable assembled

Arduino Uno is a micro-controller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the micro-controller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.. You can tinker with your UNO without worrying too much about doing something wrong, worst case scenario you can replace the chip for a few dollars and start over again.

"Uno" means one in Italian and was chosen to mark the release of Arduino Software (IDE) 1.0. The Uno board and version 1.0 of Arduino Software (IDE) were the reference versions of Arduino, now evolved to newer releases. The Uno board is the first in a series of USB Arduino boards, and the reference model for the Arduino platform.

• Micro-Controller ATmega328P
  
• Operating Voltage 5V
  
• Input Voltage (recommended) 7-12V
  
• Input Voltage (limits) 6-20V
  
• Digital I/O Pins 14 (of which 6 provide PWM output)
  
• Analog Input Pins 6
  
• DC Current per I/O Pin 40 mA
  
• DC Current for 3.3V Pin 50 mA
  
• Flash Memory 32 KB (ATmega328P) of which 0.5 KB used by boot-loader
  
• SRAM 2 KB (ATmega328P)
  
• EEPROM 1 KB (ATmega328P)
  
• Clock Speed 16 MHz