介绍了74,74 HC，74LS系列芯片的信息，使用时可能会有一些…

详细的WAV 文件格式-detailed WAV file format

离散Fourier变换（简称DFT）为离散信号的分析从理论上提供了变换工具，但由于计算时间较长而难以实现，快速Fourier变换（简称FFT）则是一种减少计算时间的有效算法。本文在对DFT计算量进行分析的基础上指出了FFT的实现途径与计算方法，针对FFT算法进行了程序设计并给出了应用实例。-Discrete Fourier transform (referred to as DFT) analysis for discrete signal theory provides a transform tool, but due to a computational time and difficult to realize, fast Fourier transform (the FFT) is a reduction in the effective algorithm to calculate time. In this paper, DFT calculation was carried out on the basis of the analysis points out the ways and realize the FFT calculation of FFT algorithm for program design and application examples are given.

超声波测距的原理图。9个按键，一个液晶。-Ultrasonic Ranging schematic. 9 buttons, a liquid crystal.

一个sql语句用法的完全手册，一定会让你收益-a sql statement usage of the complete manual, we will allow you to return!

Can总线控制器sja1000的源程序,很有参考价值-Can Bus Controller sja1000 source, great reference value

包括了《C语言学习和精华文摘》，和C语言资料大全1.0 是c语言学习的很好工具。-Including the

《毕业论文宝典》这是一本写论文很好的书籍，有着详细的格式介绍。-"dissertation book" This is a very good paper written books, the detailed format is introduced.

ISO/IEC 14496-3 OLD MPEG4 标准-ISO/IEC 14496-3 standard MPEG4 OLD

ARM嵌入式系统基础教程 很好的一本书，给打家共同分享-ARM-based embedded system tutorial a good book to beat at home to share

ABAQUS教学PPT1，有空可以看一下，适当参考。-ABAQUS Teaching PPT1, the time can look at the appropriate reference.