JoinImages_src

c、c++函数使用、查询，适合初学者使用(c, c++ function to use, query, suitable for beginners to use)

本文介绍五种查询Internet连接状态[含IP]的方法。是开发实时通信软件的重要参考文献-This article describes the five kinds of Internet connection status inquiry [with IP] method. Is to develop real-time communication software, an important reference

osg地图，在vs2010和qt5上面搭建地图软件框架(Osg map, in the vs2010 and qt5 above the map software framework)

tf-idf一种计算方法

基于PCA法的人脸识别，对本科毕业设计具有参考价值(含源代码和实验图片)(based PCA Face Recognition Act, the undergraduate graduation design reference value (including source code and experimental Photo))

说明：  用时间片轮法实现进程的调度，该程序比较短和简单(Time piece wheel realize the process of scheduling, the program relatively short and simple)

LDPC码密度进化程序，加入了自己的一些见解。(the programe of LDPC codes density evolution, with some personal viewpoint.)

对IC卡访问 读取 改写数据 ， 以及 将读取的数据发送到服务器UDP通信(not have english document)

STM32F405读取MS5611气压计(STM32F405 read MS5611 barometer)

说明：  USB协议1.1，2.0，3.0。带中文翻译(USB protocol 1.1, 2.0, 3.0. With Chinese Translation)