In a computer, a vectored interrupt is an I/O interrupt that tells the part of the computer that handles I/O interrupts at the hardware level that a request for attention from an I/O device has been received and and also identifies the device that sent the request.

What is the purpose of an interrupt vector?

Interrupt vectors are addresses that inform the interrupt handler as to where to find the ISR (interrupt service routine, also called interrupt service procedure). All interrupts are assigned a number from 0 to 255, with each of these interrupts being associated with a specific interrupt vector.

What is an interrupt vector and what is its purpose?

An interrupt vector is the memory location of an interrupt handler, which prioritizes interrupts and saves them in a queue if more than one interrupt is waiting to be handled.