In this chapter, we learned about programming using C language. We also learned how to use the serial monitoring feature of our Arduino IDE in order to know a bit more about what is happening in real time in our Arduino processor using traces.
I spoke about serial communication because it is very useful and is also used in many real-life projects in which you need a computer and an Arduino board to communicate among themselves. It can also be used between two Arduino boards or between Arduino boards and other circuits.
In the next chapter, we'll enter C code by using the serial monitoring window in order to make things a bit less abstract.