atm-corr

这是directshow的前言部分，是免费的哦！-directshow This is the foreword, is free!

说明：  使用改进的COSTAS环实现锁相环（PLL），应用于高动态的数字化接收系统(COSTAS Central improved to achieve phase-locked loop (PLL), used in high dynamic digital reception system)

MATLAB初学者 MATLAB作图，介绍了一些常用的-MATLAB for beginners MATLAB mapping, introduced a number of commonly used Dongdong

介绍了MathType的一些使用技巧，包括公式输入，公式排版等，给出了详细的图文教程(MathType introduced some tips, including formulas enter the formula typesetting, gives a detailed graphic tutorials)

项目用途电路来测试所有的 ic 的使用的微控制器和完整的代码块中提到的不同的电子组件。主要用于测试 74 系列 IC 的此项目

能实现添加，删除，查找，拨号等基本功能。当然还用到了windows皮肤，很漂亮的哟(Able to add, delete, search, dial-up and other basic functions. Of course, also used the windows skin, very beautiful yo)

usb 接口芯片介绍PDIUSBD12 是一款性价比很高的USB 器件它通常用作微控制器系统中实现与微控制器进行通信的 高速通用并行接口它还支持本地的DMA 传输-usb interface chip PDIUSBD12 introduction is a highly cost-effective USB device is usually used to realize micro-controller system with a microcontroller to communicate high-speed general-purpose parallel interface also supports local DMA transfer

使用keil5编写的STM32输出四路互补的PWM，适配正点原子的mini版，同样是为电赛逆变系统做的准备。通过定时器的输出比较模式，在PC6~PC9，输出4路PWM，每路PWM频率为500Hz，占空比为50%，每一路PWM相位差为45°(The STM32 output four complementary PWM, which is written in keil5, is suitable for the mini version of the positive point atom, which is also the preparation for the electric match inverter system.Through the output comparison mode of the timer, in PC6~PC9, the output 4 road PWM, the PWM frequency of each road is 500Hz, the duty ratio is 50%, and the PWM phase difference of each road is 45 degrees.)

使用excel制作自己需要的管理软件，使用excel制作 自己需要的管理软件(Using Excel to make the management software you need)

wsn paper.Helpful for reserch on wireless sensor networks