Discuss a section of code to which control is transferred when a processor is interrupted.

When a processor is interrupted, control is typically transferred to a specific section of code known as an interrupt handler or interrupt service routine (ISR). The interrupt handler is a routine that is executed by the processor when an interrupt is triggered. It is responsible for handling the interrupt and ensuring that the processor returns to its previous task once the interrupt has been serviced.

The interrupt handler is typically specified in the interrupt vector, which is a table of addresses that maps interrupt numbers to their corresponding interrupt handlers. When an interrupt is triggered, the processor looks up the interrupt number in the interrupt vector and transfers control to the corresponding interrupt handler.

The interrupt handler typically performs some action in response to the interrupt, such as reading data from an input device, sending data to an output device, or performing some other task that is required to service the interrupt. Once the interrupt handler has completed its task, it typically returns control to the processor, which resumes execution of the interrupted task.

It is important to note that interrupts can be triggered by a variety of sources, including hardware devices, software events, or even external events such as a power failure. The specific actions taken by the interrupt handler will depend on the type of interrupt that has been triggered.