利用模拟Butterworth滤波器设计数字低通滤波器！

数据结构1800试题(全），招工作必备练习。常用数据结构全有-Data Structure 1800 questions (all), recruit the necessary job training. There is the whole data structure commonly used

uc/osII-v2.52,是邵贝贝翻译的书里面的光盘资料。应该不错。-uc/osII-v2.52, Shao Beibei is the translation of the book on CD-ROM. Should be good.

学习电脑技巧的基础的电子书籍,适合初学者.-learning computer skills in the foundation of e-books for beginners.

javascript in 10 steps ,very good

SIP的RFC文档。RFC3621. RFC3621-SIP RFC documents. RFC3621. RFC3621

it is about speech signal processing and it is so detail.-it is about speech signal processing and it is so detail.

C++程序设计（清华大学出版社）书籍源码-C++ programming (Tsinghua University Press) Books Source

数据结构教材和学习指导，清华大学严蔚敏，公认的经典教材，不必国外的差-Data structure to guide teaching and learning, Tsinghua University, Yan Wei-min, recognized as a classic textbook, without the difference between the foreign

比较清晰地讲述正则表达式的文章，非常适合初学者了解并掌握正则表达式的用法与技巧，推荐！-More clearly about regular expressions article, very suitable for beginners to understand and master the use of regular expressions and techniques, recommended!

Dan Saks关于const的所有用法-Dan Saks talks about the usage of const