本源码用来对dsp编程实现电机速度检测，

EM78P447奏乐，利用定时计时器控制P70脚，输出一段音乐。-EM78P447 music, using regular timer control pin P70, the output section of music.

8051核的DES源代码 使用C语言写的基于51核的DES原码，变量定义使用汇编。占用了130字节RAM，比我所见到的包括汇编编写的都要快。 -8051 nuclear DES use source code written in C language based on the 51 nuclear DES original code, the use of variable definition compilation. Occupy the 130 byte RAM, than I have seen in the preparation of the compilation must fast.

本程序有详细的注释,切运行无误 ,程序模块清晰,移植性好,可以实现密码的识别,具有报警的功能-the procedures detailed in the Notes, cut operating correctly, program modules clear, transplantation, and passwords can be achieved recognition, with alarm function

这是一个062-AD0832数字电压表1602液晶，适合初学者及工程开发。-This is a 062- AD0832 digital voltmeter 1602 LCD, for beginners and project development.

俄罗斯方块的源代码及论文报告 里面有详细的代码-Russian box of the source code and articles gave a detailed code

ch451显示和四位共阴极数码管1234-ch451 four common cathode display and digital tube 1234

C51 LCD Keyboard driver

cdecl函数调用，了解printf这样的函数调用，对比stdcall会更清楚。-cdecl function call, to understand such a function call printf, compared stdcall will be clearer.

编程高手 讨论 -programming experts to discuss programming experts discussed

点阵显示 点阵显示-Dot-matrix display Dot Matrix display