用于无线IP互联的高效率网络报头压缩协议。 在3G和4G网络中均会用到。...

数据与计算机通信（第七版  影印版） 答案1-Data and computer communications (seventh edition copy version) answer to a

这是一个GSM模块的短消息接收发送程序，是一个非常成熟的代码，已经卖出很多了，非常难得，希望能给大家带来帮助。里面包括了SMS及MMS协议代码，希望大家支持-This is a GSM module to receive the short message sending process, is a very sophisticated code, have sold a lot, very rare, I hope everyone can help. Which includes SMS and MMS protocol code, I hope you will support

使用Delphi开发的短息收发，可以实现短息的收发功能-Delphi developed the use of interest rates to send and receive short, short interest rates can send and receive functions

The program constructs girth-twelve column-weight QC-LPDC codes. The rate can be changed by changing k(row-weight), size is changed by varying m(sub-matrix size).

A satellite is any object that orbits another object. In popular usage, the term satellite normally refers to an artificial satellite. A planet, or any other body, which finds itself at any distance from the sun with no "sideways" velocity will quickly fall without missing the sun.-A satellite is any object that orbits another object. In popular usage, the term satellite normally refers to an artificial satellite. A planet, or any other body, which finds itself at any distance from the sun with no "sideways" velocity will quickly fall without missing the sun.

c# 串口 以太网通信 modibus  连接 plc  从文本框输入负数 -2 补码=反+1=进位+原数 Vb 清除输入缓冲区 输出缓冲区 c#用不用清除？？哪个函数？？ //發送二進制數據 ？？？？？？？？？？？？？？ private void SendBytesData(SerialPort serialPort) { ////从 文本框取得数据 如果负数 -2 怎么办？？？？ byte[] bytesSend = Encoding.Default.GetBytes(txtSend.Text); spcom.Write(bytesSend, 0, bytesSend.Length); } 通过MODBUS TCP读写PLC源码 功能模块一：读写PLC主模块 using System; using System.Net; using System.Net.Sockets; public static void WriteWord(int mwAddress,int mwValue) {写字到以太网 if (init_plc() == 0) { try { hi = mwAddress / 256; low = mwAddress - hi * 256; hi1 = mwValue / 256; ///////////16bit low1 = mwValue - hi * 256; sendBuf[7] = 6; sendBuf[8] = (byte)hi; sendBuf[9] = (byte)low; sendBuf[10]

quadrature phase shift keying demodulation technique

基于J2ME手机软件的研究及开发与应用-phones based on J2ME software research and development and application

OPNET仿真实例，有助于初学者的快速学习。-OPNET simulations help beginners learn fast.

串口是串行接口（serial port）的简称，也称为串行通信接口或COM接口。 串口通信是指采用串行通信协议（serial communication）在一条信号线上将数据一个比特一个比特地逐位进行传输的通信模式。