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51试验板图纸可以自已动手制做-51 drawings plate can test their own hands so the system

易mfc，作者开发了一个开放的网络传播版，写的很不错，很多概念和技巧通过勤勉注重细节，适合中级以上用户

USB 协议(包括USB2.0 协议,以及一些应用实际知识)-USB agreements (including USB2.0 agreement, as well as some practical application of knowledge)

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C图形编程：PC机C图形编程手册（DOS)-C graphical programming: PC machine C graphical programming manual (DOS)

一个我总结的和别人给我的一个关于电脑硬件和软件故障处理，对于电脑不熟悉的人来说还是很有用处的-a summary and others give me one on the computer hardware and software failures, As far as the computer is not familiar with the people or very useful

1． 本文档只包括PowerDesigner部分内容（RQM,Report,CDM,PDM），内容不够全面。 2． 内容尽量简略，一些相同或类似操作过程尽量不再重复。 3． 部分术语参考了飞思科技产品研发中心监制电子工业出版社的《PowerDesigner数据库系统分析设计与应用》。 4． 暂时没有包含OOM,XML,BPM,ILM等模型内容， -1. PowerDesigner this document covers only part of the contents (RQM, Report, CDM, PDM), the content is not comprehensive enough. 2. Briefly the contents of as much as possible, some of the same or similar operation will not repeat as much as possible. 3. Fly into some of the terminology Synopsys R & D Center Products Electronics Industry Press producer of " PowerDesigner database design and application of systems analysis." 4. Does not contain the time being OOM, XML, BPM, ILM model, such as content,

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英语学习工具 英语学习好软件开发自由多了 能帮助你把真正的四六级过关 读写英语会有很大的提高-A tool for studing English. English is useful for program development. This tool is helpful in CET4&6 and spoken English and written English.

c语言入门教程，可以供不太熟悉的人查阅使用-Guide, for people not familiar with the use of inspection