1．掌握8251芯片结构和编程，掌握单片机通讯的编制。



2．了解实现串行通讯的硬环境，数据格式的协议，数据交换的协议。



3．了解PC机通讯的基本要求

-1. Master 8251 chip architecture and programming, master microcontroller communications establishment. 2. Serial communications understanding of the hard environment, data formats agreement, the data exchange agreement. 3. PC communications understand the basic requirements