C51 流水灯 实现，在有限的MCU端口资源，是个不错的方案参考代码，当中触摸部分海尔封装成库文件，只能调用。供大家参考。(C51 flow light realization, in the limited MCU port resources, is a good program reference code, the touch part of the Haier package into library files, can only be called. For your reference.)