ARDUINO MACHINE CODE
Arduino Software Sketches
When you "Program The Arduino" you use the "Arduino IDE" on your computer to write code to make the Arduino do what you want. The part you write and see is called a "Software Sketch".
Arduino Software Sketches are uploaded to an Arduino Microcomputer board. This is the code you write to create the behavior you want in your project. It creates the actual "Machine Code" that runs in the Arduino to do what you want it to do.
Usually the "Machine Code" is not visible to you. We will show some examples...