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四层电梯系统设计 有程序以及运行界面和硬件配置(Four-story elevator system design)

主要是介绍ARM的整个开发流程，讲述的还是比较具体的。(The whole development process of arm)

说明：  ATSHA204A加密芯片详细使用方法！ 保护您的程序不被抄袭。(ATSHA204A encryption chip detailed use method! Protect your program from plagiarism.)

ZEMAX 光学设计软件的一些有用的宏语言(some Macro language of ZEMAX optical design software )

软件工程名址录的工程的需求分析、概要设计、详细设计等的文档，很完整(Software engineering were recorded in the project site needs analysis, outline design, detailed design, documentation, very complete)

118 bus system in powerworld the help file

说明：  《电路设计技术与技巧(英文第三版)》 内容详细，实用(Circuit Design Techniques and Skills (English Third Edition))

说明：  电解电容工程笔记(Aluminum capacitor note)

包含位置式PID算法、积分分离式PID，可以广泛的应用于数据预测及数据分析,matlab程序运行时导入数据文件作为输入参数。( It contains positional PID algorithm, integral separate PID, Can be widely used in data analysis and forecast data, Import data files as input parameters matlab program is running.)

常用的有源晶振封装库和原理图库，AD环境。(AD environment commonly used active crystal package library and schematic library)