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 the program is running, the system must be processed by the CPU immediately the emergence of a situation