This is a simulation of serial IO port, using a program written in assembly code...

51时钟程序，用于定时，结构简单，小巧实用-51 clock procedures for the regular, simple, compact practical

实现了算术运算功能，是分别通过水平移位和循环移位来实现的，正在学习诶汇编语言的朋友可以参考一下，是我的作业-Realize the arithmetic functions, respectively, through the level of displacement and the cyclic shift to realize, and are learning assembly language ah friends can refer to, is my operating

此程序可以实现键盘发音功能，按1、2、3、4、5、6、7、8即可发音，按F6结束！-this procedure can be achieved pronunciation function keyboard, can be pronounced by 1,2,3,4,5,6,7,8, by the end of F6!

硬盘主引导扇区读写程序源代码，可用于读取硬盘主引导扇区的信息也可对其进行修改。-hard disk"s master boot sector literacy program"s source code can be used to read hard disk"s master boot sector information may also make changes.

超级流水灯源程序，三种状态转化，用PWM及定时中断控制！-Super light water source, three state of transformation, using PWM and timer interrupt control!

文件服务器，文件里有详细的服务器源代码和客户端源代码 非常实用

一个好用的整数分频电路 保证你喜欢 能够实现对任意整数的分频电路设计-a handy integer frequency divider circuit assures you like to be able to achieve arbitrary integer frequency circuit design

多功能时钟/日历芯片PCF8563并同AT89C51结合-Multi-function clock/calendar PCF8563 chip combined with AT89C51

界面转换，适合初学者学习，学习界面的基础知识简单易懂还有一些控件的最基本的应用可以对照学习添加其他相关程序想学习的请过来下载