As the name suggests micro means something small and a controller is something used to control the devices. The microcontroller consists of a microprocessor with memory and peripheral devices, associated with circuits to control the function of devices.
There are many real-time applications where the microcontroller is being applied in our day-to-day life like AC remote, remote controller toys, and Bus LED Display Board.
Microcontrollers are used to receive the information from the input devices and transmit the information to output devices.
There are different types of microcontrollers like Arduino Nano, Arduino Uno, Arduino mega, Node-MCU, and many more.
To know whether a microcontroller is working fine or not, follow the steps given below:
CASE1: Verifying where Arduino nano is working or not
STEP1: Take Arduino nano and power it with you laptop using USB A to MINI B cable