Arduino UNO R3

It was developed by Arduino.cc. The board is equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (shields) and other circuits. The board has 14 digital I/O pins (six capable of PWM output), 6 analog I/O pins, and is programmable with the Arduino IDE, via a type B USB cable. It can be powered by the USB cable or by an external 9-volt battery, though it accepts voltages between 7 and 20 volts. It is similar to the Arduino Nano and Leonardo. It is open source and free to code which is one of the reasons it is so widely used all over the world.

If you are having difficulties with the Arduino UNO, try referring to the troubleshooting page. https://www.arduino.cc/en/Guide/HomePage or the forum https://forum.arduino.cc/