获取当前机器的COM口的数量，包括usb转换的串口

VB与三凌PLC通信. 好适就数据召唤使用.也是学习串通信编程好例子.-VB and three Ling PLC communications. Good data calls on the appropriate use. Learning Series is a good example of communication programming.

Project how to make jtag rs232 programmator

上位机和单片机进行串口通信的调试VB源码-PC and MCU for serial port communications VB source code debugging

利用新型单片机c8051f020进行的编程，该单片片机具有很高的性价比。-new SCM C8051f020 use the program, the single pieces of the machine has a price.

六种列举当前所有的串口方法-six methods for handling serial ports

Dos 串口通信例程实现了FiFO ,中断发送中断接受！-Dos serial communication routines to achieve a FiFO, interrupted send interrupt accepted!

delphi 编写的云镜控制支持PELCO P/D协议的DLL。 支持对云台镜头及辅助开关的操作。直接封装了SPCOM类，调用只需输入COM口号及对应的命令字符及可。-delphi prepared by the Mirror-control support PELCO P/D agreement DLL. Yuntai support for the camera and auxiliary switch operation. Packaging a direct SPCOM category, called keys COM slogan and the corresponding characters can be ordered.

提供I2C总线初始化、工作时的启始位、结束位、提供I2C总线的时钟信号，并返回在时钟电平为高期间 SDA信号线上状态。本函数可用于数据发送，也可用于数据接收-provide I2C bus initialization, the Start-end, provide the I2C bus clock signal, the clock and return to the high-level signal line during the SDA state. This function can be used to transmit data, can also be used for data reception

获取当前机器的COM口的数量，包括usb转换的串口-access to the current machinery of the number of COM ports, including USB Serial Conversion