利用单片机实现简单音乐发生器，可以尝试实践一下，比较简单...

51单片机的 中文拼音输入法 c源程序 -51 Singlechip Chinese Pinyin input method c source

用c51编写写的x25045的读写程序，-used to prepare written procedures x25045 reader,

为Visual borland c builder实现Vision2 DLL

基于MCS51的小灯控制程序，里面有详细的注释，请多多指教-MCS51-based small-signal-controlled process, which has detailed notes, please advise

用51单片机做拉幕式时钟显示，有设计方案，原理图以及源代码-To do with 51 single-chip pull-screen clock display, has design, schematics and source code

RS-485接口具有较强的抗干扰性，数据传输的距离较远，在一些应用中常常需要把RS-232标准的信号转换为RS-485的标准信号进传输。图中所示电路允许数据在RS-232/RS-485这两个不兼容的串行数据接口间传递。传输速度为480波特时，传输距离可达1750米。图中双RS-232收发器IC1将主机(PC)输出的RS-232电平转换为TTL电平，驱动高速RS-485收发器IC2 的输入，倒相器使IC2、IC3在受到起始位时被激活。-RS-485 trying to lay all the thoroughly bleed at the nose picking up the birthday 扰 fern cavity 强 ， Chu Huai basin cavity beat escapement for the birthday candle远Now ， Which instance, using Beckmannia中

51单片机开发的等精度数字频率计，实现计数0--51 Single-chip, such as the development of precision digital frequency meter, realize counts 0--

meg16示例的所有功能，编译环境为ICC，是AVR初学者的好例子

串行DA，MAX549PDF及汇编原程序，测试成功。51控制。-serial DA, and the compilation of the original MAX549PDF procedure, tested successfully. 51 control.

液晶屏1602左移显示，效果不错，大家共享！！1-1602 LCD screen to the left shows that the effect of good, for all to share! ! 1