用串口通信的方式实现双机备份，串口采用了 mscomm控件。

基于COM技术的组态软件研究与实现,硕士论文,对组态软件的研究与开发有一定的帮助-COM-based configuration software research and realization of a master" s thesis on the configuration software research and development is certainly helpful

TTL串入并出口74hc164资料 。希望可以用-TTL string into and exported 74hc164 information. Wanted to use

485通讯接口模块的编程应用，监控显示，检测报警显示，上下值的设置输入输出的结构-485 Communications Interface Module programming applications, monitor display, alarm detection showed that the whole value of the structure of input and output settings

chch串口程序-ch ch Serial procedures

通过串口实现PC机和下位机的通信，用VB。NET来实现-through the PC serial port and the next crew of communications, using VB.NET to achieve

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

实现串口通讯，一个用word写的方法，上传供大家共同学习-Realize serial communication, a way to use word to write, upload for everyone to learn together

delphi编写的com程序,自己可以添加功能,可用做串口调试-com prepared by the procedures, they can add functionality and can be used for debugging serial

这是恒坚电器提供的完整的c++串口编程源代码-Tsunekata appliances provide a complete c serial programming source code

Zebra 热传打印机控制 串口ActiveX控件 My email: richardlzl@163.com -Zebra thermal printer-control serial ActiveX My email : richardlzl@163.com