I2C 总线8 位远程I/O 扩展口芯片PCF8574 的原理与应用

xilinx 开发板原理图,里面含有pcb图,自己完全可以做一块来玩,不用买别人的,很省钱,又锻炼了自己.-Xilinx development board schematic diagram, which contains pcb chart their own can make a play, do not buy someone else

freescale ep100 PWM 程序，按程序中代码初始化即可启动使用PWM，代码已经经过调试。-freescale ep100 PWM process, according to the procedure in the initialization code to activate the use of PWM, the code had already been debugging.

基于arm内核的RTOS，用C语音实现的一个RTOS，具有参考价值-based on arm core RTOS, C achieved a voice RTOS, with reference value

实参求值顺序的程序。--Program for evaluating real numbers.

s3c44b0开发板，开发工具ADS1.2,串口通信实验代码，代码完整，包含硬件初始化代码，和最后编译结果，适合初学者自己动手写代码的样例。-S3C44B0 development board, development tools ADS1.2, serial communication experiment code, code integrity, including hardware initialization code, and compile the final results, suitable for beginners to write their own code sample.

本文档主要介绍Q.931协议基本知识，及在日常的维护中使用HDLCMON抓取的呼叫消息流程Trace的分析方法，并根据不同的问题及现象，提供简单的分析解决方法-This document introduces the basic knowledge of Q.931 protocol, and the use of routine maintenance HDLCMON news crawl call flow Trace analytical methods, and according to different problems and phenomena, the analysis provides a simple solution

嵌入式系统中,从任意一点到任意一点画直线算法程序-Embedded systems, from any point to any point draw a straight line algorithm procedure

这是个四轴飞行器的数据融合算法，对调整飞控稳定性具有非常好的作用

等精度测试频率计，包括程序源代码以及相关注释-Precision test frequency meter, etc., including source code and related comments ......

TCPIP协议栈的实现-TCPIP stack the realization