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形成一个余弦调制波形，用于调制波形，具有非常重要的意义(Form a cosine wave modulation for modulation waveform, has great significance)

优化法求救方程最小值或最优解 matlab命令窗口会出现几个诸如以下结果的数据(Optimization method distress minimum or optimal solution equation matlab command window will appear as the following results in several data)

维基尼亚密码的matlab程序，解压m文件放在matlab工程目录即可！(matlab code for vigenere cipher)

Clos Image With Test On Finger Picture

OFDM system orthogonality plot or simulation

基于matlab的数字均衡器，有利于学习matlab滤波等内容(Matlab-based digital equalizer，to learn matlab filtering)

a numerical solution of Poisson equation for axis-symmetrical cylindrical coordinates

主成分分析方法的一个小例子，注释详细，形象地说明了主成分分析的原理和应用。(A small example of the principal component analysis method, detailed notes, vividly illustrates the principles and applications of principal component analysis.)

PSO 工具箱，粒子群优化测试，有具体的使用方法。调试简单，易懂。(Particle Swarm Optimization)

Speed Control of a DC Motor Using BJT H-Bridge This demonstration illustrates simulation of a H bridge used to generated a chopped voltage and control speed of a DC motor, in open loop, in both directions