a multimedia categories, support for multiple file formats

距离函数用matlab实现的距离函数用matlab实现的(Distance function using matlab matlab realize the distance function)

说明：  在过程控制中，按偏差的比例（P）、积分（I）和微分（D）进行控制的PID控制器（亦称PID调节器）是应用最为广泛的一种自动控制器。它具有原理简单，易于实现，适用面广，控制参数相互独立，参数的选定比较简单等优点；而且在理论上可以证明，对于过程控制的典型对象──“一阶滞后+纯滞后”与“二阶滞后+纯滞后”的控制对象，PID控制器是一种最优控制。PID调节规律是连续系统动态品质校正的一种有效方法，它的参数整定方式简便，结构改变灵活（PI、PD、…）(In process control, the PID controller (also called PID regulator) controlled by deviation ratio (P), integral (I) and differential (D) is one of the most widely used automatic controllers. It has the advantages of simple principle, easy realization, wide application, independent control parameters, simple parameter selection, etc. It can also be proved theoretically that PID controller is an optimal control for the typical object of process control - "first-order lag + pure lag" and "second-order lag + pure lag". System. The regulation rule of PID is an effective method for dynamic quality correction of continuous system. Its parameter setting method is simple and its structure is flexible (PI, PD,...).)

简单LR语法分析程序自动生成器的实现，可用作数据结构课程设计(LR (0) grammar analysis)

在系统栏显示一个图标, 对服务的进行快速开始和停止的小工具(Service start/stop tool.)

界面UI，duilib界面库，可定制开发(Interface UI, duilib)

无刷无霍尔启动程序  mirochip芯片  

最终一个开源版本，后面的4.几已经不开源了，做图形的可以下来学习学习

DVB标准中的有关条件接收的CI标准规范，英文版(EN50221 Common Interface Specification for Conditional Access and other Digital Video Broadcasting Decoder Applications)

c语言实现的lwm2m协议，程序是可以直接编译通过的，主程序在src的lwm2mclient.c中(The lwm2m protocol implemented by C language can be compiled and passed directly. The main program is in lwm2mclient.c of src.)

说明：  一个牛人做的GIS系统写的开发文档，具有很强的参考价值。。。(Cattle are doing a GIS system, the development of written documents, has a strong reference. . .)