雷达信号仿真的文章，主要是基于先进仪器仿真雷达信号。

一个关于usb编程入门例子,开发一个usb driver需要做的基本步骤.-Getting Started on usb programming examples, the development of a usb driver needs to do the basic steps.

低通切比雪夫I型数字滤波器阶数为7阶 在2000Hz通带表现截止在2500Hz阻带边界在过渡带和阻带之间是单调下降波形. -Low-pass Chebyshev Type I digital filter order is 7  in the 2000Hz band pass-band cut-off at 2500Hz stopband performance in the transition zone and the boundary between the monotonic decline in stopband wave.

the spectrum of the OFDM symbols in time domain

这是一个使用UDP协议通信的例子程序，非常简单，没有做错误处理机制。由于UDP本身是无连接、不可靠的通信协议。会因为不同的网络环境，有可能会产生数据丢失、数据重复、顺序错乱等情况。 　　示例程序包含一个服务器端和一个客户端，可以多个客户端接入服务器端。-This is an agreement to use UDP communication examples procedures, is very simple, not so error-handling mechanism. Because UDP is a connectionless, unreliable communication protocol. Because of different network environment, there may be data loss, data duplication, the order of disorder and so on. Examples of the procedure includes a server-side and a client, multiple clients can access server-side.

利用api函数进行收了邮件。包括了邮件的收取、发送、删除等常用功能-Use api functions upon receipt of a message. Including the receipt of the message, send, delete and other commonly used functions

symbian for c++ 系统声音调用例子-football scores for voice calling system examples

Communication between PC and LPC2000 SPI

modem 拨号上网工具，处理源代码程序，解析modem拨号上网过程！-It s a tool of dial-up to internet, source code of process programme, parse whole process of dial-up to internet through modem .

ISDN Layer 1 Recommendations ITU-T I.430

采用stun方式和sock5穿越防火墙，来保证能在防火墙条件下通过