What is a micro controller and what do you need to know about using one in your project?
A microcontroller by itself is just a chip. Companies like Arduino and Beagle Board, design a PCB and pick components to create training boards like the Arduino Uno, and the beagle bone black.
These training boards make very easy to program the micro processor and also allow you to connect to other micro controllers or IC without having to solder. Their capabilities can also be expanded with "expansion boards"
Expansion boards, well as the name says, expand the capabilities of the training board. This is useful because it allows any add-on to be plug and play.
https://www.eetutorials.org/micro-controllers/
