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c++ vector Class for sum and multi

黄金分割法，要用的自己下来看看吧，很好的优化程序 (Golden section method, we should take a look at it from their own, a good optimizer)

说明：  STM32F103最小系统开发板(good)

基于DSP2812平台，CCS3.3，采用事件管理器EVA的T2计数器测定QEP电路脉冲个数，编码器AB相输入到EVA的指定引脚。正转则T2增计数，反转则T2减计数。亲测可用。注意一圈脉冲数为编码器线程的4倍。(DSP2812 based platform, CCS3.3, the event manager using EVA T2 of the counter circuit pulse number measuring QEP, Encoder AB input to the specified pin of the EVA. Forward is the T2 to increase the count, reverse the T2 down count. Pro test available. Note that the number of pulses is four times that of the encoder thread.)

给定n种物品和一背包。物品i的重量是wi>0,价值为vi>0,背包的容量为c。选择装入背包的物品，使得装入背包中物品的总价值最大。(Given n kinds of goods and a backpack. Weight of the item i is wi> 0, the value of vi> 0, knapsack capacity c. Select the items into the backpack, so into the backpack of items in the total value of the maximum.)

C#入门教程，教你快速得学会用C#语言编写网页-C# Getting Started tutorial, teach you quickly have to learn how to use C# language page

本设计采用STC89C52芯片组成的最小系统，结合八位按键控制音调输出，24C80存储芯片，以及扬声器构成简易电子琴。通过软件设置，使系统达到，按下控制按键，蜂鸣器发出Do，Re，Mi，Fa，So，La，Si，Do-H，八个简单的音调，能自动播放预设歌曲，实现简易电子琴系统功能。 资源包含设计电路原理图、PCB图以及51单片机源码

50道c++编程题及相应源码参考，c++初学者的必备练习题库（主要涉及c++面向对象、基本算法、文件操作，参考使用的教辅资料为谭浩强的c++程序设计）

本程序基于matlab编程，绘制了一箭穿心的图案(The program is based on matlab programming, drawing an arrow pattern mandrel)

用vs2008建立的ffmpeg的工程，并有ffplay的示例播放器。当前国内关于ffmpeg的资料并不多，次资料算作是比较重要的资料，推荐下载！(Ffmpeg built with vs2008 project, and ffplay example player. Information on current domestic ffmpeg is not much time information counted as more important information, recommended download!)