本程序使用AVR系列单片机ATmega88来控制LED的各种功能，通过单按键可以实现LED灯光的关断、弱光、强光、SOS光源等效果，再关断光源的同时，电路即进入睡眠状态，有效的保证低功耗的实现。(The various functions of this program uses the AVR Series MCU ATmega88 to control LED, the single button can achieve LED lights off, weak light, light,