协议物理层

制版软件PROTEL99的封装库文件,-Engraving Software package library file PROTEL99

一些实用的51单片机接口源程序，里面附有文档说明，很好的开发参考资料-51 microcontroller interface source inside with documents show that the development of good reference

STC12C5402型

128-64点阵液晶模块的显示程序带反显平移等功能.rar,非常实用.-128-64 dot-matrix LCD display module procedures with significant anti-translation capabilities. Rar, very practical.

FAT的C语言原代码,没有底层驱动,支持打开文件,读写文件,不支持长文件名.-FAT C language source code, there is no bottom-driven support to open the document, read and write documents, do not support long file names.

在用单片机设计的电梯模型中，电梯下降的控制程序-Single-chip design with an elevator model, the decline in elevator control procedures

二进制小数转为十进制BCD码的汇编程序，结果保留四位并在七段数码管上输出-decimal to binary decimal BCD compilation procedures, and results in four reservations in paragraph 107 digital output tube

isd4003语音系统的回放和录音程序,测试成功,请有这方面经验的朋友多多指教-isd4003 voice playback and recording system procedures, the test was successful, have experience in this area exhibitions Friend

正弦信号发生器DDS AD9850 正弦信号发生器ad9850实际键盘（经典）-Sinusoidal signal generator signal generator sine DDS AD9850 actual keyboard AD9850 (classic)

一个北京青云科技液晶显示器资料，送给学习液晶的同志们。-Beijing Qingyun a liquid crystal display science and technology information to the study of liquid crystal comrades.