51test

有关 C语言的CRC校验的资料，很实用，值得收藏和学习(About the C language, the CRC data, it is practical, it is worth collecting and learning)

51单片机的示波器，所有资料,dajiakuaixia(an Oscilloscope by mini51)

基于单片机的霍尔传感器测速源码，带有蜂鸣器报警功能。(Hall speed sensor based on single-chip computer source, with a buzzer alarm function.)

vb单片机上位机例程 很详细的例子，直接可用 适合初学者 (vb example)

tree operation made by using c++

这是基于单片机的计算器程序，可以实现加减乘除的功能(This is based on single-chip calculator program, Math functions can be achieved)

说明：  温湿度串口检测程序，实现对数据的读取和检测(Temperature and Humidity Serial Port Detection Program for Data Reading and Detection)

STC12C5204AD单片机控制单个二极管闪烁源代码，二极管由138译码器使能，另一端单片机IO口控制，采用延时程序，是单片机初学者很好的学习源代码(STC12C5204AD flash microcontroller source code to control a single diode, diode 138 by the decoding is enabled, the other end of the single-chip IO port control, using the delay procedure is a very good chip for beginners to learn the source code)

以8051为基础的有键盘；有液晶显示器；有传感器前置调理电路的数据采集器控制程序。(8051-based data acquisition control program)

c8051F UC/OS 开发软件。 。。。。。。。。(c8051F UC/OS software development. . . . . . . . .)