说明：  使用了EvaTimer1来控制LED灯的亮灭,你在学习中 可通过它来了解EV的定时器工作原理,对以后做电机之类的控 ** 可看到板上8个发光二极管产生流水灯的效果
(EvaTimer1 to control the use of bright LED lights eliminate, you can study it to understand the EV timer works, right after the class to do motor control board** you can see eight light-emitting diodes produce light water Effects)