难得的HT1621B中文版资料，希望可以帮到大家，共同进步。-HT1621B rare Chinese version of the information, I hope you can help to make progress together.

控制芯片HT1621B的说明pdf，是串行的写法，想学串行的初学者可以看看，很有好处。-Descr iption of control chip HT1621B pdf, is a serial written, beginners may want to learn the serial look very good.