pc端用并口来模拟IIC串口的驱动程序，

最初学习写单片机串口通讯时的源程序，可以让初学者参考一下！-first learn microcontroller serial communications at the source, so that beginners can take a look!

一个十分好的用汇编和C写的异步串口程序-with a very good compilation and writing of the C asynchronous serial procedures

msp430串口程序 MSP430_UART_DEMO-procedures MSP430_UART_DEMO Serial Controller

本串行通信程序利用汇编语言通过BIOS中断调用和DOS功能调用实现PC机双机串行通信。其中，上位机和下位机串行口均为辅串口COM2（口地址为2FXH），对外用9针连接器与令一台PC机连接；BIOS通过“INT 14H”4个中断服务子程序，分别完成串口初始化编程、发送一帧数据、接受一帧数据以及测试通信线状态。本程序分为PC机串口自动测试程序（目的是测试串口好坏）和PC机全双工双机通信程序两个部分。-the serial communications procedures through the use of assembly language BIOS interrupt calls and function calls DOS PC Dual Serial Communication. Among them, PC and the next crew will be supplemented by serial port Serial COM2 (I address 2FXH) external with 9-pin connectors and enable a PC connection; through the BIOS "INT 14H," four interrupt service routines, complete serial port initialization programming, Send a data receiving a data communications test and the state line. The procedures are divided into PC serial automatic test procedure (for the purpose of testing Serial good or bad) and full-duplex PC-machine communication program two parts.

实现多线程串行通讯接口源程序-multi-threaded serial communication interface source

串行口测试程序。例如：程序复位后先向串口发送"Hellow Word!",之后每从串口收到一个字符就把它从串口发送出去 -serial testing procedures. For example : After the first reduction procedures Serial send "Hellow Word!" , After each received from the serial port of a character out of it sent from the serial port

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

Serial port driver for 8051 chips.

此为串口编程的一个实例，利用VC实现了双机互联，各位不妨试一试！-this as a serial programming examples, the use of the VC-Internet machine, you may wish to try it!

UART测试代码，可以与实现下位机与上位机之间的RS232协议的UART通信测试-UART test code, can achieve the lower computer and the host computer RS232 protocol between the UART communications test