你知道睡眠（）/ usleep() / nanosleep()不好延迟的问题。

在C8051F930单片机上，利用端口匹配和PCA实现按键的长按、短按功能。-In the C8051F930 microcontroller, using the port matching and PCA to achieve a long button press, short press functions.

DS18B20的驱动程序。通过KEIL C编译，在AT89S51上运行正常。-DS18B20 drivers. Through the KEIL C compiler, in the normal run AT89S51.

C51的45D驱动程序-C51 45D Driver

SMG12864接口程序 调试已经通过 ，可以放心使用-SMG12864 debug interface program has passed, you can rest assured that the use of

Silicon IDE的用户手册,方便调试C51的单片机-User Manual of Silicon IDE,designed for C51 MCU

硬盘控制电路以及原程序Demo,知识是属于全人类的。能将自己的成果无条件与人共享是伟大和受人尊敬的，同时也是一件幸福的事。 由于我想得到幸福和受人尊敬，所以我也开放我的工作成果。（其实也不算什么工作成果，匆匆忙忙用了一晚写的，见笑了。 在此感谢邵春伟同志，我在研究ata协议的时候参考了他写的程序） -drive control circuit and the original procedure Demo, knowledge is the whole of mankind. The results can unconditionally with the people sharing is great and respected, but also a happy thing. I want happiness and well respected, so I open my work. (What is not a work haste spent a night writing, a laughing stock. This would SHAO Chun-wai comrades, I studied ATA agreement for the reference to the writing process)

CAN 驱动编程-CAN-driven programming

计算51单片机波特率的小程序，dos版-SCM baud rate calculation of 51 small programs, dos version

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.

计算一个矩阵中的水仙花素，不过使用前先建一个txt文件，里面输入一个矩阵-Calculation of a matrix in the Su-daffodils, but before using to build a txt file, inside the importation of a matrix