amcircuit

this is a book on nine free programs every pc should have.

这是自考资料！通过复习 ，好好复习。祝各位好运。(This is the Self item! Through review, good review. I wish you good luck.)

AEC 回声消除参考书，里面全面介绍了AEC相关理论。(AEC spec documents)

这是一个采用FPGA实现PCI接口的运动控制卡，全部实现的论文资料，是我的硕士毕业论文，请指正，(using FPGA PCI Motion Control Card, all of the papers, I have a master's degree thesis, please correct me, thank you)

说明：  python图形界面tkinter等的详细介绍和案例演练，教你用pygame库开发属于你的小游戏(Python graphical interface Tkinter and other detailed introduction and case drill, teach you to use pyGame library to develop your own games)

电子芯片sn75453b详细说明 的中文资料 (Chinese information detailed electronic chip sn75453b)

开关电源设计书，美国人写的 ，很经典 ，在电源行业发展的，一定要看看这本书！(Switching power supply design of the book, written by Americans, it is a classic, in the power industry, we must look at this book!)

一本对于学习超声系统很有帮助的书，可以方便的查阅和理解。书中对于各类的超声例如医学超声，工业超声都有说明。(A book that is very helpful for the learning of ultrasonic systems can be easily consulted and understood. All kinds of ultrasound, such as medical ultrasound and industrial ultrasound are described in the book.)

gsm原理 (gsm原理 )

CAM350中文版电子书使用说明，非常实用.(CAM350 Chinese version of the instructions, very practical.)