What is Interrupts?

Interrupts are signals that inform the processor that an event has occurred, requiring immediate attention. They temporarily suspend the execution of the current program, execute an interrupt handler (also known as an interrupt service routine or ISR) to deal with the event, and then resume the interrupted program. Interrupts are commonly used to handle hardware events (e.g., a key press, data arrival from a network interface), software events (e.g., a system call), and errors (e.g., division by zero).