PWM

此代码研究的是力学上的断裂问题，从理论上研究了断裂过程中介质的受力形态。-This code is the study of fracture mechanics problems, from a theoretical study of the fracture process in the form of the medium force.

dataset-dimensionality-reduction-python-master

声音信号短时傅里叶变换MATLAB程序，可得到短时傅里叶变换的图像(Short-time Fourier Transform (STFT) of sound signal can be obtained by MATLAB program.)

一款简单的java爬虫+搜索引擎，比较适合用于自己学习(A simple java crawler + search engine)

LPC2138单片机控制蜂鸣器播放音乐， 蜂鸣器电路图(LPC2138 microcontroller control buzzer play music, Buzzer circuit)

一个用c++写的简单的学生管理系统，包括添加，删除，按成绩平均分和总分排出顺序-A c++ to write with a simple management system for students, including add, delete, according to results from the average total points and the order of

am2120驱动代码，在keil环境当中可以直接使用；并且其中包含获取温湿度数据的接口函数(AM2120 driver code can be used directly in keil environment. And it contains the interface function to get the temperature and humidity data)

一库仓储：第一便捷的开源仓储软件，基于 HTML5 的，适合库存品类在 3000 以内的中小企业。界面简单，无需配置品类，直接使用。(One warehouse: the first convenient open source storage software, based on HTML5, suitable for inventory category within 3000 of small and medium enterprises. Simple interface, no need to configure category, direct use.)

说明：  使用单纯形法求解线性规划问题，求最优解不停迭代(Simplex method is used to solve linear programming problems and the optimal solution is iterated continuously.)

这是用MATLAB编写的静态图像压缩程序中的基于灰度编码部分-is prepared using MATLAB static image compression based on the procedures Gray coding