Interrupts are signals that capture a CPU’s attention when input/output is required. They can be produced by hardware or software, for instance when a key is pressed or data needs to be read from a disk.
Computers also have an internal timer that generates interrupts several times a second to maintain accurate time or allow for multitasking.
When an interrupt occurs, the operating system takes over and provides necessary actions. The priority of the interrupt determines how fast it is handled. Interrupts are prioritized for efficient system operation.
FAQs
What causes interrupts in a computer system?
Interrupts can be generated by hardware events, such as user input from a keyboard or mouse, or software events, such as a program that needs to access data from a disk.
Why are interrupts important in computer systems?
Interrupts are critical for efficient and timely communication between hardware and the CPU. They allow for quick response times to user input and help maintain accurate system operation.
How does the operating system handle interrupts?
When an interrupt occurs, the operating system takes control and determines what action should be taken. The priority of the interrupt determines how quickly it is handled for maximum efficiency.
Conclusion
Interrupts are essential for effective system operation and allow for timely communication between hardware and the CPU. The operating system handles interrupts and prioritizes them for efficient operation, ensuring accurate system performance.
