生日快乐音乐播放，汇编编写的扬声器，不是蜂鸣器

单片机的中断定时操作，详细介绍了c51中定时器设置和中断设置应用情况-SCM interrupted regular operations, detailing the decoder timer settings and installed applications interruption

采集数据后处理程序。在MS51单片机上可直接拷贝应用。-After data collection process. In MS51-copy single-chip can be directly applied.

基于以太网IC卡门禁控制的C++BUILDER程序-Ethernet-based IC card access control of the C++ BUILDER procedures

51单片机旋转屏幕的时钟，是doc格式，代码在文章里-51 Single-chip clock rotating screen is doc format, the code in the article

智能巡线绕障小车的设计，采用51单片机，超声波测距。-Impaired wound smart patrol car design, the use of 51 single-chip, ultrasonic ranging.

电子设计大赛开关稳压电源总程序，能实现基本和发挥部分的功能-Electronic Switching Power Supply Design Competition total procedures, can play a part and realize the basic functions of

支持I2C总线的EEPROM24lc256芯片的读写原程序-support I2C Bus EEPROM24lc256 chip reader original program

51写的拼音输入法-51 write phonetic input method

S3C44B0扩展16C554串口，包括原理图和源码 原来上传过源码，看到很多人下载，考虑到下载者阅读方便，所以这次增加了原理图。-16C554 serial S3C44B0 expansion, including schematics and source code uploaded the original source, to see a lot of people to download, taking into account that those who download the ease of reading, so the increase in schematics.

LC72131完整程序，朋友刚刚给我就提供给朋友参考-LC72131 complete procedure, a friend just gave me a reference on the provision to a friend