获取当前机器的COM口的数量，包括usb转换的串口

TC中的串口编程基础-the TC basis Serial Programming

45db081的读写程序，应用于spi总线的读写，在keil c环境下编译通过-45db081 read and write procedures for the 20 bus to read and write, the c51 c compiler environment through

一个基于串口通信的汽车行驶记录仪数据采集处理系统，这里是主程序和数据库，整个项目使用Delphi的Com+组件技术开发，后面将陆续上传各个组件的源码-a serial communication based on the vehicles running Recorder Data Acquisition and Processing System, which is the main program and database, the entire project using Delphi Com component technology development, will continue to upload behind all of the source components

投篮运球综合是运用单片机技术设计的一个易于算投篮个数的发明，该程序是为此而设计-shot dribble integrated microcomputer technology is the design of an easy shot count the number of inventions, the program is designed for this purpose

rs232编程原理详解， 不可多得的一本好书 做硬件开发必须-Detailed programming rs232 principle, rare books to do a hardware development to be

VB OMRON-PLC通讯源程 VB OMRON-PLC通讯源程 VB OMRON-PLC通讯源程-VB-PLC communications VB source-OMRON- PLC communications VB source-OMRON-PLC communications-source

串口通信程序,可以直接执行使用,带有界面容易操作-serial communication procedures, the implementation can be directly used, with the interface is easy to operate

485通讯是工业现场用的很广泛的通讯方式，现在仍然在应用-485 communications industry is the scene of extensive means of communication, still in the application

串行口测试程序。例如：程序复位后先向串口发送"Hellow Word!",之后每从串口收到一个字符就把它从串口发送出去 -serial testing procedures. For example : After the first reduction procedures Serial send "Hellow Word!" , After each received from the serial port of a character out of it sent from the serial port

是一个用isual C++写的基于串口的手机通信程序，希望对大家有用。-Is a use isual C++ Written in mobile phone based on the serial communication program, in the hope that useful to everyone.