中断机构能发现中断事件，且当发现中断事件后迫使正在处理器上执行的进程暂时停止执行，而让操作系统的中断处理程序占有处理器去处理出现的中断事件。对不同的中断事件，由于它们的性质不同，所以操作系统应采用不同的处理-Interrupt agencies can find an interrupt event, and when it was found to force an interrupt event process being　d on the processor to temporarily stop the execution, and let the operating system interrupt handler occupies the processor to handle interrupt events occur. Different interrupt events due to their different nature, the operating system should be treated differently