指纹图像增强

C51 编的音乐程序，关于如何编制音乐代码, 其实十分简单，频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍(C51 music program)

des和rsa的算法演示文档 (des and rsa algorithm presentation)

用stm32f107v编写的ps2键盘程序(Ps2 keyboard with stm32f107v written procedures)

在理解了离散小波变换的基本原理和算法的基础上，通过设计VC程序对简单的一维信 号在加上了高斯白噪声之后进行Daubechies小波、Morlet小波和Haar小波变换，从而得到小波分解系数；再通过改变分解得到的各层高频系数进行信号的小波重构达到消噪的目的。在这一程序实现的过程中能直观地理解信号小波分解重构的过程和在信号消噪中的重要作用，以及在对各层高频系数进行权重处理时系数的选取对信号消噪效果的影响。(In understanding the basis of discrete wavelet transform basic principles and algorithms, through the design VC program Daubechies wavelet, Morlet wavelet and Haar wavelet transform after a simple one-dimensional signal plus a Gaussian white noise, resulting wavelet coefficients wavelet reconstruction signal again by changing the layers to achieve high-frequency coefficients decomposed noise cancellation purposes. Can intuitively understand wavelet decomposition and reconstruction process and an important role in signal de-noising in the process of implementation of this program, and in the high-frequency coefficients when the weight of the layers selected for signal processing coefficients denoising affected.)

该源码是从最新的webrtc中提取的，有相关的makefile，能够在linux下使用，并且有相关的测试代码，如果想在windows下使用，只需要在windows系统下建立相关的工程即可

1652例程(tm1652模拟io.c)

mATLAB教程第六章案例，时间变动序列(mATLAB Tutorial Chapter VI case, the time sequence changes)

这是一个电力系统谐波检测的MATLAB仿真模型，采用的是基于瞬时无功功率理论的ip-iq法，效果很好(This is a power system harmonic detection MATLAB simulation model, based on the instantaneous reactive power theory ip-iq method, the effect is very good)

光立方制作的源代码,可以直接输入进行编程,减少菜鸟编程实践 (Light cube made of the source code, you can directly enter the program, reducing the rookie programming practice)

cypressUSB芯片CY7c68013A的开发板原理图和例程可以直接使用，很值得学习(cypressUSB CY7c68013A chip development board schematics and routines can be used directly, it is worth learning)