非常有用的资料，对学习VHDL很有帮助，大家要好好珍惜

采样率小于一个连续时间信号最大频率的2倍时就叫undersampling，欠采样，根据抽样定理，当fs>=2fmax，也就是oversampling，过采样时，数字信号才能重建成原来的模拟信号，欠采样重建会发生混叠-Sampling rate of a continuous-time signal is less than the maximum frequency of 2 times is called undersampling, bandpass sampling, according to sampling theorem, when fs

介绍时频工具箱的PPT，研究通信，诊断，测试方向的同仁可以拿来做一个参考-presentation frequency toolbox PPT, research communication, diagnosis, tests direction colleagues can be used as a reference

计算分形维数的计盒算法，用于边长相等的图像的算法-Calculation of fractal dimension of the box algorithms for the edge of the image appearance, such as the algorithm

ANSYS单元翻译，希望对初学者有所帮助，比较基础-ANSYS unit of translation, and they hope to be helpful to beginners, basis of comparison

请认真书写上传资料的详细功能、包含内容说明(至少要20个字)。尽量不要让站长把时间都花费在为您修正说明上。压缩包解压时不能有密码

首先这个程序是在Linux下写的，然后在Windows的VC6中完善即调试通过，最后在Linux下调试运行，完全正确。-First of all, this procedure was written under Linux and then Windows in the VC6 debugger that is perfect through the final run in Linux under the debugger, entirely correct.

protel 99 SE快速绘制原理图，对画原理图很有效的-Protel 99 SE rapid mapping diagram of painting diagram very effective

1.学习7段数码显示译码器设计。 2.进一步熟悉VHDL设计技术,掌握CASE语句的使用。 3.掌握文本输入法的顶层设计方法。 -1. Learning 7 decoder design digital display. 2. More familiar with the VHDL design techniques, master the use of CASE statements. 3. Have the text input method of the top-level design methods.

本压缩包里面是描述硬盘坏道修复的源程序程序-disk repair

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