中断:指当出现需要时，CPU暂时停止当前程序的执行转而执行处理新情况的程序和执行过程。即在程序运行过程中，系统出现了一个必须由CPU立即处理的情况-Interrupt: refers to when in need, temporarily stop the current CPU execution to deal with the new situation of application and implementation process.Namely in the process of