RTL8019中文数据手册，不是原创，转载而已，不过内容不错！

模块化c语言实现模拟I2C读写EPROM 程序-C language for analog modular I2C read and write EPROM program

keil C51编写的的RFM01和RFM02应用程序，程序用于无线RS232通信，具有单片机间通信自检功能，对使用RFM芯片的朋友也许有帮助-keil C51 prepared RFM01 and the RFM02 application procedures for wireless RS232 communications, with a single-chip communication self-test function, on the use of RFM Friend chips might be helpful

用keil C编写绝对原创 内有proteus的仿真文件。可以实现时间的重设闹钟的设置，到时间后有警告。-Keil C used in the preparation of absolute originality has Proteus simulation file. Can realize the time to reset the alarm clock settings, and has warned that time.

12864液晶（STC7920控制器）屏上用基本指令与扩充指令分时显示文字、图片、图片与文字混合、任意位置的图片。-12864 LCD (STC7920 controller) to use on-screen instructions and the expansion of the basic time-sharing display text instructions, pictures, images and characters mixed, arbitrary location of the picture.

一个对4X4数字键盘进行行&列扫描,获取扫描码的程序,支持符合键,串键,软件去抖.-one pair of 4x4 digital keyboard ranks scanning, access code scanning procedures, with key support and collaborate keys, software to tremble.

一个基于AT89C51SND1C的硬盘MP3（原理图+源代码+实物照片） -AT89C51SND1C a hard disk-based MP3 (diagram source code-kind photos)

计算器 计算器 计算器 计算器-Calculator Calculator Calculator Calculator Calculator Calculator

光电鼠标的电路图，很好的，多多交流学习-Circuit diagram of optical mouse, very good, a lot of exchange of learning

中断串口程序-interruption procedures

LM12864LDC 应用程序，包含驱动和最基本的功能实现-LM12864LDC applications, including drive and realize the most basic function