这是我做的关于考勤机的一些测试程序，请大家积极下载，很有帮助。...

Simple UART with 8x clock

chch串口程序-ch ch Serial procedures

串口调试精灵，可以收发ASCII和HEX两种格式的数据，简单实用。-serial debugging genies, TX ASCII and HEX both formats of data, simple and practical.

profibus主站及从站源代码，可以作为主从站开发的借鉴-Profibus master and slave source code can be used as a major development from the point of reference

串口调试工具，在Visual Basic6.0中实现-Serial port debugging tool, implemented in Visual Basic6.0

一个C＋＋语言编写的程序，看后你不会后悔-a C++ language to develop the procedures that you will not regret it later

common communication

基于W77E58的串口通讯程序-W77E58 based on the serial communication program

学院系统，源代码详细描述，如有疑问，请与我联系。

本源码采用spcomm串口控件，接受数据采用线程方式，这是一个串口测试工具，可以用来做串口监听等。非常适合使用delphi开发串口程序的程序员做参考！-the source used spcomm Serial Control and accept data using threads, it is a serial testing tools can be used to do Serial wiretapping. Delphi is very suitable for the development of Serial procedures programmers refer!