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。...

用VC++6.0实现PC机与单片机之间的串口数据交换-VC 6.0 PC with a serial port between SCM data exchange

C51下怎样实现I2C的控制及程序实例 此程序仅供参考-C51 how to achieve I2C control procedures and examples of this procedure is for reference only

通过串口与IC设备进行数据交互传输，实现IC卡餐饮收费系统。-through the serial port and IC equipment interactive data transmission, Food IC card system.

该程序实现了串口之间的相互通信，是异步串口通信，串口编成程序-Implementation of the procedures between the serial communications, serial communication is asynchronous, the classic experimental procedures for computer networks

linux下串口驱动！ 不错，可以看一看！了解串口的驱动！-Serial Driver! Yes, look at! Understanding Serial Port Driver!

HP 8163A power meter GPIB programming reference 技术文件-HP 8163A power meter GPIB programming reference technical documents

用C++写的RS232串口异步通讯功能模块，支持16550 UART芯片，中断收发数据，波特率最大115200bps，自定义收发数据缓冲大小，支持软硬件流控。-C wrote asynchronous RS232 serial communication module, 16550 UART chip, Transceivers interruption data, 115,200 bps maximum baud rate, since the definition of sending and receiving data buffer size, support hardware and software flow control.

eVC下操作串口提取GPS有效数据2，把文件名的后缀.rar去掉即可，不要解压缩。-operate under effective Serial GPS data from two, the file name suffix. Rar be removed, not decompress.

使用RS232串口2，通过Copley电机控制卡控制电机运转的VC程序。并且程序开发手册也包含在文件夹内。 Using RS232 2 port, a VC program is developed for Copley motor control card, by which motors can move precisely. And a handbook for program development is inclued in the rar file.-The use of RS232 serial port 2, through Copley cards to control motor control motor functioning VC procedures. And program development manual is also included in the folder. Using RS232 2 port, a VC program is developed for Copley motor control card, by which motors can move precisely. And a handbook for program development is inclued in the rar file.

模仿DCS系统主站的仿真软件，使用串口来收发数据。-imitate DCS system master station simulation software, the use of serial ports to send and receive data.