一个用VB编写的电话应答软件，可以进行录间和播放。使用TAPI 技术实现的，对串口编程有一定的指导作用...

图文并茂，详细介绍了keil与proteus联合调试的方法和步骤-illustrated in detail with the keil proteus joint testing methods and steps

串行口通讯控件源代码，可能用来进行RS232串行口的通讯工作，非常好用-Serial port communication control source code, may be used for RS232 serial port communications, very easy to use

power sampling in noise . u can test it .its my first code i hav uploaded

本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF signals, mainly related to the telephone dial tone of the basic principles of synthesis and identification of the main methods, the use of MATLAB software and the FFT algorithm on the telephone communication system dial tone Synthesis and Recognition . And further the use of MATLAB in the production of graphical user interface simple and intuitive GUI interface simulation. Able to take advantage of matrix synthesis of different fundamental frequency 0- 9 different keys of the dial tone and be able to different dial tone to be the correct identification, the dial tone from a telephone number to resolve the process of completion of the telephone dial tone system, a simple experiment simulation

通过利用共享内存的一部分空间(以下称为“数据信息区”)来存储当前内存中存储的数据信息，完成了对内存读写功能的完善。

通过串口直接发送文件的例子-sent directly through serial documents examples

通信系统仿真原理与无线应用代码 是一本不可多得的仿真书籍 请站长将大小为19kb和39kb的两个文件删掉，其他5个文件为该书代码-Communication System Simulation Principle and wireless application code is a simulation of rare books, please head to the size of 19KB and 39KB deleted the two files, and other documents for the book 5 code

利用分裂基算法求实序列的DFT,虚部赋值为零,这些程序是用C来实现的-Split-radix algorithm for the use of realistic sequence of DFT, the imaginary part of the assignment of zero, these procedures are used to achieve the C

MODBUS TCP(C++)Example ModbusTCP server - source and WIN32 executable有可执行文件-MODBUS TCP (C) Example ModbusTCP server-Win32 source and executable file is executable

对基本调制解调进行了详细的阐述,包括BPSK,QPSK,16QAM,64QAM-The basic modulation and demodulation described in detail, including BPSK, QPSK, 16QAM, 64QAM