详细介绍PIC单片机使用SPI方式与IC卡进行数据传输的原理和电路设计，以及使用USART方式与PC机进行串行异步通信的工作原理；介绍PIC单片机听SPI方式和...

使用USR和RockWell Modem的语音Modem程序 -Modem program Using 3Com USR Modem and RockWell Modem

在以往的关于多用户检测程序，给出的多是针对CDMA系统的。出于长期以来笔者对TD-SCDMA系统应用研究，在这里我进行了一些修改，内容如文：-In the past on the multi-user detection procedures are given for CDMA systems. For a long time writer on the TD-SCDMA system, applied research, I made some changes to the content such as text:

C program to calculate the BER performance of BPSK modulation in an AWGN channel. The program takes the file "BPSK" containing voltage levels and passes it in an AWGN channel with a given SNR. The received message is then Hard decision decoded and the bit error rate is calculated. The BER over different SNR is calculated. THe output values can be used to draw a BER vs SNR(dB) curve.

DMX的c语言源码 欢迎大家下载 给你个湖广会馆-the c language source code of DMX512

用于歌曲的录制和人工标注音高，用于其他程序后面的操作，如音高跟踪和旋律识别等。

本课题应用DELPHI作为开发环境设计了针对对西门子公司的S7-200PLC的串口调试程序，并能在界面上显示多时段交通灯控制系统PLC控制程序所分配的存储区，实时读取各存储区的当前状态。-This application development environment design for a DELPHI of Siemens company in the serial of S7-200 PLC program, and can debugging interface display more time traffic control system, PLC program allocation of storage area, read the current state of the store.

OpenH323 DLL libraries

this code is about demodulation of 4qam

一个厉害的串口通信监视程序（可监视已打开的串口）-a powerful serial communication surveillance (monitoring may have opened the serial port)

关于串口通讯的类，很方便的读写串口进行通讯。-On the serial communication class, it is easy to read and write serial port to communicate.