详细介绍了以太网收发器RTL8019芯片，中文文档，免除了读英文文档的痛苦和低效...

手把手教你学单片机（第2版）实验程序，原书代码，内有部分是我练习时的代码，可以参考。-Taught you how to learn SCM (version 2) protocol, the original letter code, in some code when I practice, you can refer.

爱普生S1C33L05 s USB驱动程序库

AD7705的驱动程序，采用C51开发。-AD7705 driver development using C51.

采用普通单片机控制的电桥测试仪，贡献给大家啊-Ordinary single-chip microcomputer-controlled electric bridge tester, contribution to the U.S. ah

使用国产CH341A芯片实现USB转串口，完全兼容AVR JTAGICE，可以自动升级。 支持芯片: ATmega16(L), ATmega162(L), ATmega169(L or V), ATmega32(L), ATmega323(L), ATmega64(L), ATmega128(L). 原理图还附加了RS232接口，可以方便用户自主选择串口或USB下载程序。 还附加有可自动升级的HEX文件-The use of domestically produced CH341A chip USB to serial port, fully compatible with the AVR JTAGICE, can be automatically upgraded. Support chips: ATmega16 (L), ATmega162 (L), ATmega169 (L or V), ATmega32 (L), ATmega323 (L), ATmega64 (L), ATmega128 (L). Schematics also added a RS232 interface, can easily users to choose the serial or USB download. Additional there is also automatically upgrade the HEX file

一款用单片机的简洁的测控温电路，含电路图有汇编源程序-Using a simple single chip temperature measurement and control circuits, including circuit diagrams have to compile source code

非常有用的12864LCD功能驱动KEilC51的开发

用AVR 音乐合成： 1.音乐数据存放于芯片的flash存贮器中2.PA口显示不同的音阶变化。 3.音乐数据的低四位选择音调频率，高四位*5后，为音调持续时间。-Using AVR Music Synthesis: 1. The music data stored in flash memory chips in the mouth 2.PA show different changes in scale. 3. The music data to choose the four tones of low frequency, high 4* 5, in order to tone duration.

c51的温度测量程序,利用的是模拟输入初学哦，写得不好。-Get Temperature with C51

Modbus master microchip pic