用上位机（PC）通过串行调试助手或是自己做的串口操作软件，发送16进制数，控制8个LED灯的各个的亮与灭。

想让哪个灯亮都可以通过发送数据来实现。目标就是用软件控制硬件！达到单片机实时控制第一步：

-With the host computer (PC) via serial debugging aids, or make their own operating software serial port, sending 16 hex numbers to control 8 LED lights in all the bright and eliminate. Want the lights which can be achieved by sending data. Goal is to use software control the hardware! The first step to achieve real-time control MCU: