一个以PDIUSBD12为USB控制器件的应用例程。

其中的usb端口通信已经作为一个模块来使用，用户只需用以下函数就可以对usb端口进行方便地读写： unsigned char D12_WriteEndpoint(unsigned char endp, unsigned char len, unsigned char * buf) 此为usb端点输出函数，endp是要进行通信的端点，取值为3（普通端点，最大可一次传输16byte）或5（主端点，最大可一次传输64byte）；len为一次输出数据长度；*buf为数据所在位置。 usb端点数据的读操作是由底层函数自动完成的（相关函数为unsigned char D12_ReadEndpoint(unsigned char endp, unsigned char len, unsigned char * buf)； 相应端点为2和4），所读到的数据存于GenEpBuf[]（普通端点）、MainEpBuf[]或EpBuf[]（主端点）中，用户可以直接读取使用。-Usb port communication which has been used as a module, the user can use the following function on the usb port can easily read and write: unsigned char D12_WriteEndpoint (unsigned char endp, unsigned char len, unsigned char* buf) This is the endpoint usb output function, endp is to communicate the endpoint, the value for 3 (common endpoint, the first transmission maximum 16byte) or 5 ( the main endpoint, the first transmission maximum 64byte) len Length of output data for the first time * buf location for data. usb endpoint data is read

在51等单片机中使用PC键盘的源码-in 51 other microprocessor using a PC keyboard FOSS

这是一份Ｉ２Ｃ数据传输程序．自己写的，有识之士看看，-I2C data transmission procedures. Wrote it myself, people of insight to see,

C8051F120CPU的AD读写程序，用C语言编写，内含注释。-C8051F120CPU the AD to read and write procedures, using C language, including the Notes.

51单片机温度检测18B20，经过验证的啊-microcontroler

很有用的一些从用代码 有keil编译实现的 可以-Useful to have some code from keil compiler can realize

C51入门大全,对初学者很有帮助,认真学习一下里面的程序或者直接拿出来在单片机上运行一下,里面的程序基本上都是有效的.-C51 Portal Daquan, very useful for beginners. seriously study the inside of the program or directly out of the running on this MCU, Basically, the procedures which are effective.

CH451的LED驱动及8*8键盘驱动程序 CH451的LED驱动及8*8键盘驱动程序 -CH451 the LED driver and 8* 8 keyboard driver for the LED driver CH451 and 8* 8 keyboard driver

ATMEL公司的AT89系列单片机的资料，不用我多说了吧：）-ATMEL"s AT89 Series MCU information, I need not say it :)

C51实用源码，极具参考价值！-practical source of C51, great reference value!