全美经典数字信号处理学习辅导，非常有用的数字信号处理辅导书！-The nation s classic digital signal processing the counseling book, very useful for digital signal processing counseling books!

入门51单片机的利器,详细介绍单片机的构造跟应用，加入的代码例子可以使小白迅速掌握51单片机(Introduction to the 51 MCU, a detailed introduction to the construction and application of SCM. The code example can make newer quickly grasp the 51 single chip microcomputer.)