the API function to write the serial communication program. Right Serial visit.

串口通信小程序，非常使用-small serial communication procedures, the use of very

c8051F221的SPI总线通信(收)-c8051F221 SPI Bus Communication (received)

串口编程的是反例子，可用于测试你的串口通行-anti-examples can be used to test your serial port access

用于开发税务票据管理的软件，可以打印，生成报表-tax bills for the development of the management software, print, generate statements

目录串口通信高级编程提供了一个能够进行串口通信的类，能够方便地进行各种数据通信。-Directory serial communication provides a high-level programming to carry out the type of serial communication, the ability to easily conduct various kinds of data communication.

完整的异步串行通信的处理程序-integrity of the asynchronous serial communication procedures

西门子300的一个程序。是和HMI（WINCC）集成的一个程序-Siemens 300 a procedure. Is HMI (WINCC) integration of a program

串口通信与工程实践tty编程TTY.dsp,TTY.h-Serial Communication tty programming and engineering practice TTY.dsp, TTY.h

实现了modbus RTU通讯协议的COM组件-realized Modbus RTU communication protocol COM

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