Use of microcontrollers Microcontrollers to control the temperature of the AC Microcontrollers are now used in many modern ACs. The user can control the temperature of the AC in the microcontroller by input to the microcontroller by remotely setting the temperature of the AC used in his room at what degree , after how long the ACT will be turned off automatically. The microprocessors of these microcontrollers control a certain level of temperature by controlling different types of sensing devices and controllers. The use of microcontrollers in microwaves Many people nowadays use microwave ovens to heat and prepare food at home. Microcontrollers are used in microwaves. The microwave has a key panel for user input and an LED or LCD for display. If the user inputs the temperature at which the microwave will run, the microwave will turn off automatically accordingly. Use of microcontrollers in cars Microcontrollers are now used in almost all modern cars. Excessive heating of the car engine causes many problems. So the microcontroller used to control the temperature of the engine signals the car engine to overheat and automatically shuts off the engine. Microcontrollers are also used to control the AC of the vehicle.