利用Matlab的音频处理

源码中包括了QPSK的调制与解调，以及QPSK信号比特误码率的计算-Source code included in the QPSK modulation and demodulation, as well as the QPSK signal bit error rate calculation

利用vc6.0 创建了mfc工程，实现了一个串口程序，是自己根据网上的代码，加上自己添加的代码，适合初学者。-Use of vc6.0 created mfc project implements a serial port program their own code under the web, plus add their own code, suitable for beginners.

设计一种快跳频通信系统，仿真其中的序列和性能，并给出系统框图。-Design of a fast frequency-hopping communication systems, simulation and performance of the sequence, and gives the system diagram.

此源代码介绍一个适用于Windows平台的串口监视，调试程序。这是我在vc串口通信书本上看到源码，共享一下-This source code applied to introduce a Windows platform serial surveillance, debugging procedures. This is my serial communication in vc to see the source books, sharing what

重点介绍HART协议在电磁流量计中的应用技术-HART protocol focuses on the application of electromagnetic flowmeter technology

一篇介绍键盘接口的英文文档，讲得很详细，做ps/2设计的可以参考-a keyboard interface on the English documents, made it very detailed, so ps/2 reference design

A reference of SIP protocol stack, very good.-A reference of the SIP protocol stack, very good.

利用udp的通信软件，包含client和server端，有发送包的分析等，很好的通信例程-use udp communications software, including client and server side, sending packet analysis, etc. good communication routines

根据波形数值在屏幕上画出波形的滤波器显示程序-based waveform numerical draw on the screen filter waveform display program

modbus协议中文版，详细。适合初学者学习用。-Chinese version of Modbus protocol in detail. Suitable for beginners to learn.