Basic 8051 Core Microcontroller Interruptions

Abstract

The most common method of communication between humans is by interruptions, e.g., when a person calls/asks another (it is an interruption process). The person who is contacted must usually stop what they are doing and respond to the request of the person that needs to be answered. Afterwards, the person who has been called must return to what they were doing. This same approach has also been implemented in computer systems, for instance, when a transducer (electrical/electronic circuit with a sensor) that is electrically connected to one of its interruption inputs requests an action from the computer system. Therefore, the computer system must stop what it is doing, answer the call of the interruption, and finally resume what it was doing. This strategy of input variable monitoring greatly facilitates the use of microcontrollers in machine control applications [1–10].