基于51单片机、MAX7219和DS12887的电源开关节能控制器程序。通过按键控制，用户可以预置开启关闭电源的时间，通过LED驱动芯片MAX7219驱动数码管实现人机界面。-based microcontroller, MAX7219 and the power switch DS12887 energy-saving controller program. Through the control buttons, users can turn off the power to open preset time, by the LED driver chip digital control MAX7219 drive to achieve human-machine interface.