操作系统概念

说明：  gcc的安装相关资料 详细介绍了gcc的安装步骤和方法 (gcc installment correlation data in detail introduced gcc installs the step and the method )

java虚拟机规范(java hypothesized machine standard )

计算机故障排除方法，很有用的电子书，不错的教程。(Computer troubleshooting methods, useful e-books, good tutorial.)

《无线通信》重点论述当前各类无线通信系统中具有普遍性和代表性的基本知识，包括基本的理论、问题、设计思路和分析方法。全书内容包括无线信道模型、无线信道容量、无线通信中的调制编码技术及均衡处理技术、扩频通信，还包括多天线系统、多用户系统、多载波调制、自适应调制与编码、蜂窝系统及无线自组织网络等。书中每部分内容的讲述都有全新的视角和独特的处理方法，并配合丰富的图示、例题和习题。 《无线通信》适合作为通信工程和电子信息类相关专业高年级本科生和研究生的教材，同时也可供工程技术人员参考。(Wireless Communication focuses on the basic knowledge of universality and representativeness in current wireless communication systems, including basic theories, problems, design ideas and analysis methods. The book includes wireless channel model, wireless channel capacity, modulation and coding technology in wireless communication, equalization processing technology, spread spectrum communication, and also includes multi-antenna system, multi-user system, multi-carrier modulation, adaptive modulation and coding, cellular system and wireless self-organizing network. Each part of the book has a new perspective and unique treatment methods, and with rich graphics, examples and exercises. Wireless Communication is suitable for senior undergraduate and graduate students majoring in communication engineering and electronic information. It can also be used as a reference for engineers and technicians.)

说明：  很好的python基础书籍，适合入门，推荐给大家(python learning book)

khalil的经典书籍《非线性控制》的习题答案。(khalil s classic book nonlinear control exercise answers.)

nRF24E1通信相关的源程序！很有帮助！(nRF24E1 communication-related source code! Very helpful!)

this is a sum for 2 digit numbers

这是MATLAB的数学手册，对于初学者来说有一定的帮助。(This is the MATLAB Manual of mathematics, for beginners, there will be some help.)

用 Java 将 aes算法实现， (make out aes by java)