opening-system

这个是工程师应该掌握的20个电路，希望大家可以了解参考一下，谢谢！(This is the engineer should master 20 circuit, I hope you can understand the reference, thank you!)

C开发人员，初级面试100道题，可以多看看，有利于打开开发的门。(C developers, primary interview 100 questions, you can see more, to open the doors of development.)

ida的帮助文件，翻译成中文的，查函数很方便(ida' s help file, translated into Chinese, it is convenient search function)

西门子仿真编程软件S7-PLCSIM V5.4，用于S7-300/400系列PLC程序的仿真(S7-PLCSIM V5.4 offers the following new features with this release: DP, Industrial Ethernet and PC Internal connection types supported in addition to MPI Formerly, S7-PLCSIM used a default connection of MPI, address 2. With S7-PLCSIM V5.4, you can browse STEP 7 projects and select a networked node for establishing a simulation connection. S7-PLCSIM simulates the CPU of the selected node, all nodes that belong to that CPU, and the subnet of the selected node. Increased number of blocks supported for simulation S7-PLCSIM supports a set of OBs, SFBs, and SFCs as described in the electronic manual and online help. Of these, some are NOPs that is, they do not perform any operation. With S7-PLCSIM V5.4, the number of blocks that are not NOPs has increased.)

北斗一代通信协议，用于北斗通信程序编写的参考资料，希望对大家有用(Beidou generation communication protocol, Compass Resources for communication programs written .HOPE it s good use for you,)

lua程序设计，lua入门最经典的电子书，高清版本(lua programming, lua Getting the most classic books, HD version)

OllyDBG 实例教程 入门教程 OD入门教程包含实例(Getting Started Tutorial Tutorial OllyDBG instance)

C++全套学习课件-PPT格式,适合于C++初学者学习使用(C++ a full learning courseware-PPT format, suitable for beginners learning to use C++)

[计算机科学经典着作].Programming.Pearls.pdf.zip 编程珠玑(Programming.Pearls PDF)

说明：  基于数字全息和离散余弦变换的数字水印技术(Digital watermarking technology based on digital holography and discrete cosine transform)