Embedded Microcontrollers are one of the most widely and commonly used integrated circuits in any electronic/electrical gadget. Main purpose of Embedded Microcontroller is to control how electronic gadgets work. This complexity can be as simple as LED control to autonomous driving. Embedded Microcontroller are manufactured and developed by number of Semiconductor Companies. Further every semiconductor company make their own family of microcontroller. We would be learning about microcontrollers by categorizing them into different semiconductor companies and their family.