基于蓝牙RFCOMM协议编写的打印服务端程序，java语言

POS超市管理系统-Supermarket POS management system

Search Engine Based on P2p Technology.

基于MC145159的PLL频率合成器设计与实现 介绍了锁相环路频率合成器的基本原理,分析了集成锁相环芯片M C 145159的工作特性,给出了集成锁相环芯片M C 145159的一个应用实例,为高频频率合成器的设计提供了一个较好的思路.测试结果证明了设计的合理性与实用性,系统频率稳定度优于10-7.-MC145159 PLL frequency synthesizer design and realization of PLL frequency synthesizer the basic principles of integrated PLL chip M C 145159 work characteristics, Integration is the PLL chip M C 145159 example of an application, for High Frequency Synthesizer Design provided a good idea. The test results proved the rationality of design and practicality. the system frequency stability is better than 10-7.

很同用的PWM！！！！！希望大家喜欢-Is the same used by PWM! ! ! ! ! I hope everyone likes

Design Pattern C Source Code

电子文档（PDF格式）：《高质量程序设计指南》（C和C++语言描述）-electronic files (PDF format) : "high-quality programming Guide" (C and C language description)

Samkar POS 零售管理系统是为中心的数据库系统，它可以被用来管理你的中小企业。Samkar RMS 允许用户存储几乎所有他们的业务信息的电子化，包括销售、 员工、 属性、 客户、 供应商的资料，甚至允许功能用户发展到数据库范围的扩大。最重要的是，这一信息是容易获得授权的用户，并提供石头硬墙在未经授权的访问。 Samkar RMS 是高度灵活和可配置以满足多数个人业务需要。它是一个多用户系统，可以同时使用的几百个。它运行在微软 Windows 平台 （Windows XP SP3 和更新）

北航夏宇闻老师编写的关于从算法设计到硬线逻辑的实现的文章。-XIA Yu-Wen Beihang teacher reports on the algorithm design to hard-line logic, the realization of the article.

This book provides readers with the knowledge of Visual C# concepts. In addition to the concepts explained in the chapters, the book provides readers with several projects that enable them to create Windows applications,Web services,Web applications, and mobile Web applications.The book aims for providing the readers with extensive knowledge of C# so that they are able to develop live projects using C#. The book is aimed at readers with a basic knowledge of programming.

大区域DEM数据处理及其三维可视化应用,大区域DEM数据处理及其三维可视化应用-large regional DEM data processing and 3D visualization applications, DEM large regional data processing and 3D visualization application