achieve characters change! The need to run two machines, one Taiwan can the two...

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

com port test program

实现MODEN的串口通信，VC编程比较经典。有一定的实用性，值得大家参考-achieve modem serial communications, more classic VC. A certain degree of practicality, it is worth your consideration

实现对philp快球的串口控制，可以控制快球的上下左右的转动。除了本身的控制界面外，还提供了网络的接口，可以在网络上对其实施控制。需要著名的组件trayicon和控件msco-to achieve faster serial control of the ball, control the ball around the next turn. In addition to the control interface, but also provides a network interface, the network can implement their control. Need famous trayicon components and controls msco

说明：多线程 (Multi-Thread) RS232 串行口通讯构件 ( 1.51 版，附源码 )-: multithreading (Multi-Thread) RS232 serial port communication components (1.51 version, with source)

embeeded Uart useing PIC24F

一个很好的串口监视程序，可以实现串口发送数据的监视-A very good serial surveillance procedures, can send data to serial surveillance

介绍了Linux下的串口驱动的设计层次及接口, 并指出串口与TTY终端之间的关联层次(串口可作TTY终端使用)-Describes the serial port under Linux-driven design and interface level, and noted that the serial link between the terminal and the TTY level (TTY serial port can be used for end-use)

一个基于API的Vb.net的串口通讯控件，使得串口编程更加方便-an API based on the Serial Communications Programming controls, making programming more convenient Serial

通过串口发送at指令 等待返回值判断当前的网络状况以及服务商等有关信息 用与gprs的通信-sent through the serial port at the value orders waiting to return to judge the current state of network service providers and other relevant information in communications with EDGE