光束在自由空间以及各种介质中传播

说明：  ec2108改运行内存，教程 ec2108改运行内存 ec2108改 运行内存(ahg hdashl kjsafh;l jlksjdl)

远峰pxa255系列开发板图，标注有各个元器件的功能，可作参考-series of far-pxa255 development map, marked in various parts of the function can be used as a reference

在当今,流行的编程软件种类繁多，它们编程方便、易于维护，但是在与硬件直接打交道和编制系统软件时却束手无策，于是C语言就有了用武之地。C语言作为汇编语言与高级语言之间的一种过渡语言，兼有汇编语言的高效和高级语言的方便。 　　在通讯中，为了保证行运安全可靠，标准的串行口必须具有许多握手信号和状态信息。这是因为通讯的各个计算机CPU速度不一样（这会导致“错帧”）以及发送机发送数据速度比接收机接收速度快（这会导致“过冲”）。为解决这个问题，我们采用一个简单的握手信号，即发送机每次仅发送半个字节（低4位）的数据，而另外半个字节（高4位）则用来传送信息。我们可以对信息位（高4位）进行如下简单的编码：-today, the popularity of the wide variety of software programming, is easy to maintain, but to deal directly with the hardware and system software when compiled a loss, so there will be a C language battlefield. C language as the compilation and Advanced Language a transition between languages, both assembly language and the efficient high-level language convenience. In telecommunications, in order to ensure safe and reliable transport firms, the standard serial I must have shook hands with many signals and state information. This is because the various computer communications CPU speed is not the same (this would lead to "the wrong frame") and transmitter to send data faster than fa

利用元胞自动机，加入社会力等因素，正式模拟了灾害发生时人员疏散应急情况，可获得人员疏散时间。(By using cellular automata and adding social forces, the emergency situation of evacuation is simulated and the evacuation time is obtained.)

说明：  megammmmmmmvmfmfhshcc

php实现飞信功能，转载自http://www.zendstudio.net/archives/php-fetion-class-source-download/-php function to achieve Fetion, reproduced from http://www.zendstudio.net/archives/php-fetion-class-source-download/

说明：  verilog实现的fft算法，其中还有ifft算法(FFT algorithm based on Verilog)

一款3d赛车游戏,界面友好.需要的朋友可以下载.-A 3d racing game and friendly interface. Need a friend can be downloaded.

这是一个windows下使用的串口小助手小程序(This is a small assistant program used under Windows.)

Rtu MotherBoard containing slots for DI,DO,AI, Ethernet, Serial and GSM