这个是关于树的代码，可以帮助那些初学者学习参考

这是一套教会读者掌握和使用UML的教材和指导手册，而不是枯燥的标准文献。对于想学习和使用UML的广大读者，这是一套难得的好书。-This is a church readers grasp and use UML materials and instruction manual, rather than the standard boring literature. For those who want to learn and use UML readers, which is a set of rare books.

Autonomous indoor mobile robots are gaining increasing popularity for the shared use in military and civil applications. Recently aerial or ground robots of various shapes and sizes have been developed for quick detection and observation of circumstances in calamity environments such as indoor fire spots [1, 2]. In an indoor environment, however, weak reception of GPS signals has posed additional challenges to the operation of the robots. Therefore less expensive self-localization with unaided external sensors is one of the most important problems in popularizing indoor mobile robot products.

接口硬件连线。基于中断控制的声光报警器的设计（硬件连线）-Interface hardware to connect. Interrupt-based control of sound and light alarm design (hardware connection)

微电子器件与IC设计 课后习题答案 （科学出版社）-Microelectronic Devices and IC design after-school Exercise answers

单片机外围器件实用手册 数据传输接口分册 北京航空航天出版社 -A Practical Handbook for Single-chip peripheral device interface data transmission volumes Beijing Aeronautics and Astronautics Press

华为 编程规范与案例-programming norms and Huawei case

电话伴侣开发源码 可以实现答录机等高级功能-Tel partners to develop source code can realize advanced features, such as answering machine

网上都很难找的到的一本关于串口通讯的详细的介绍书籍，在VC，TC下都源代码！-the Internet are very difficult to find one of the serial communication on the detailed briefing books, the VC, TC under source code!

控制台应用程序：ManagedNUnmanaged 项目 应用程序向导已为您创建了此 ManagedNUnmanaged 应用程序。 本文件概要介绍组成 ManagedNUnmanaged 应用程序的每个文件的内容。 ManagedNUnmanaged.vcproj 这是使用应用程序向导生成的 VC++ 项目的主项目文件。 它包含生成该文件的 Visual C++ 的版本信息，以及有关使用应用程序向导选择的平台、配置和项目功能的信息。 ManagedNUnmanaged.cpp 这是主应用程序源文件。

linux 高级技术，全面介绍linux的一本高清书籍，对linux 入门和提高都有好处，可以作为参考资料-linux advanced technology, comprehensive description of a high-definition linux books, linux started right and improve benefit both can be used as reference