If we are to hear a loud bang while walking to school, we would immediately shriek out "What was that sound?!". If we are to investigate further, there is a process which happens within our body in this situation:
A loud bang is sounded.
Our ears pick up the sound.
Our brain analyses and responds to the sound.
Our brain instructs us to shriek out "What was that sound?!".
Arduino mimics the brain in our body to analyse and respond to the external environment, such as sound in this case. The objects involved in the 4 individual processes above can be stated in robotic terms as follows:
A loud bang: INPUT
Our ears: SENSOR
Our brain: ARDUINO
"What was that sound?!" shriek: OUTPUT
Arduino is made up of a computer (a chip on the board) and code (computer language).
In order to get your computer to recognize your Arduino, you would need to download its drivers.