This is my appraisal done on the plane of some testing procedures, please downlo...

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

这是我仿照串口助手（龚建伟）作的一个例子并修正了其中的一些bug，程序中还包括了一些我做的可重用的类，希望对大家有一些帮助，欢迎大家联系我，共同提高，谢谢！-modeled on serial assistant (Dan) as an example of the amendment and some of the bug, procedures also include some I do reusable category, we hope to have some help, I welcome you all linked together to improve, thank you!

一个手机串口通信的类子，值得参考！！！如果你刚学习串口通信，一定值得下载！ -A mobile phone sub-type of serial communication, it is also useful! ! ! If you are just learning of serial communication, it is worth to download!

通过PC端控制液晶显示器，解压无需密码-control through a PC-inch LCD monitor, without extracting passwords

是关于灵达电源通信规约的串口通信程序，功能是把电源监控器的采集数据上送到规约前置机中。-GOLD comunication rule

调试RS232串口，实现基本的数据的发送。-adjust theRS232

VC异步通讯串口类-VC asynchronous serial communications category

串口通信，MSComm控件，不是API，忘大家查证-Serial communication, MSComm control, not the API, everyone forgot to check

SIEMENS西门子S7-200PPI通讯协议-SIEMENS Siemens S7-200PPI communication protocol

随着Windows98的推出，越来越多的微机用户已习惯于Windows操作系统。不过Windows应用软件的开发对于一般工程技术领域的技术人员来说并非易事，然而使用微软的VisualBasic6.0（简称VB6）来开发这些方面的Windows应用软件就十分方便，编程工作量相对较小，只需进行主要应用功能的编程和少量界面控制的编程。本文介绍利用VB6串行通信编程的方法对采用了RS-232接口的仪器,进行串行通信的计算机测控软件开发和实现仪器功能和指标的验收。-With the launch of Windows 98, more and more computer users are accustomed to Windows. But Windows application software development for the general area of engineering and technology and technical personnel is not easy, but to use Microsoft Visual Basic 6.0 (VB6) to the development of these applications on Windows is very convenient, programming workload is relatively small, only major applications programming a small amount of control and interface programming. This paper describes the use of VB6 serial communication programming method used to the RS-232 devices, serial communication control computer software development and the achievement of equipment functions and targets of acceptance.