There are three methods for handling deadlocks in resource allocation systems deadlock prevention, deadlock avoidance and deadlock detection combined with recovery. Of these three methods deadlock avoidance is preferable in many cases but seldom

圣诞灯程序，含有开关和8模式变化闪烁彩灯，汇编语言写的，晟矽微电子的开发软件。(lamp program have 8 mode share led and have key to control)