基于CE下的串口数据读写程序。串口操作是Wince中最常用的操作之一。CE的串口驱动采用流式驱动，操作串口就像操作文档一样。但需要注意对串口进行正确配置，否则容易出丢数据的现象。-CE-based serial data reading and writing under the program. Wince serial operation is in one of the most commonly used operations. CE serial driver using flow-d