获取当前机器的COM口的数量，包括usb转换的串口

两机串口通信 可以传送各种文件，包括二进制文件 可达RS-232最大速度-two serial port communications can be transmitted various documents, including binary files up to RS-232 maximum speed

该软件是一个串口通信的上位软件，能够和单片机通信，获取当前的温湿度值，简单，使用，可靠，对于初学者很有借鉴价值-The software is a PC serial communications software, and be able to single-chip communications, access to the current temperature and humidity value, easy to use, reliable and useful reference for beginners Value

vb api 进行串口通信-vb api for Serial Communication

自己用API编写的端口通讯-Port Communication with API by myself

日语版232串口的通信用控件源代码，主要应用于232通信程序开发和设计-Japanese version of 232 serial communication with the control source code, 232 is mainly used in the development and design of communication procedures

串行通信-Serial Communication

多线程，多接收模式串口类 LsComm ,串口通信源代码!-multi-threaded, multi-mode receiver category LsComm serial, serial communications source code!

VC++实现串口通信，觉得好的人顶详细介绍串口通信-VC serial communications, the top people feel good detail Serial Communication

一个实用的串口接受程序，希望对大家有用，同时希望大家都能提供一些有用的东西-Serial port to accept a practical procedures useful for everyone, at the same time I hope people will provide some useful things

这是非常有挑战性的题目。对于用户输入的任意一个平面函数f(x)，绘制出其函数曲线。这里最关键的技术难点就是如何实现计算表达式的值。在《编译原理》和《数据结构》的书中，都有对表达式运算方法的论述。说实在的，在编译型计算机语言中实现对用户输入表达式的运算是非常困难的。需要对表达式进行扫描，去括号，按照运算符的优先级生成2叉树，然后遍历该树生成逆波兰表达式，再然后通过栈的方法进行运算。如果在表达式中再包含有函数的话......描述起来都麻烦，更不要说用程序实现了:-(-This is a very challenging issue. For user input an arbitrary planar function f (x), mapping out its function curves. Here the most critical technical problems is how to achieve calculated the value of the expression. "Compiling Principle" and "data structure," the book, have right of expression Operational discussed. Indeed, the computer language compiler to achieve expression of the user input operation is very difficult. Need to scan expression to the brackets, in accordance with the priority Operators Generation 2-ary tree, and then traverse the tree generated reverse Polish expression, and then through the stack approach to computing. If the expression again contains the function described ...... these are trouble, not to mention t