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一个封装的Modem AT命令操作类YsATModem的快速拨号程序。程序的正常使用，需要两台分别连接modem的PC机，通过电话线拨号连接。(A package category Modem AT command operation procedures YsATModem the speed dial. Procedures for normal use, the need for two separate modem to connect the PC, dial-up connection through the telephone line.)

VB程式碼，可以和RS232串列通訊做結合，加以利用和Com port互動(VB code, and RS232 serial communication done with, and use interactive Com port)

说明：  基于visual c++开发，实现有bmp图像序列向avi视频信号转化(Based on Visual C + + development, the conversion from BMP image sequence to avi video signal is realized)

基于CC2540芯片的串口测试程序，是改别人的程序，很实用测试过,可供大家参考，程序架构调整过，很容易看懂。(Based on CC2540 chip serial test program, it is to change others program, very practical tested, for your reference, application architecture adjusted, it is easy to understand.)

Visual Studio 2008 实现crc校验方式(Visual Studio 2008 crc check)

VB写的列表框_自由选择源码，有助于新手学习。(Written in VB source list box _ freedom of choice to help novices learn.)

杨建国老师的通讯原理课件，第三章模拟信号的调制与解调，主要讲述信号产生与调制，射频特性，解调，MSK、GMSK、PSK、QPSK、BPSK、QAM等原理(Yang Jianguo teacher communication principles of courseware, the third chapter of the analog signal modulation and demodulation, and focuses on the signal generation and modulation, the RF characteristics, demodulation, MSK, GMSK, PSK, QPSK, as BPSK, QAM and other principles of)

说明：  开源的 SIP 电话代码 (Open-source SIP phone code)

说明：  c#写的IE，作为新手参考学习还是不错的(c# written by IE, as a novice or a good reference to learn)

很漂亮的代码雨，为什么一定要20字啊，好无赖啊(The code is very beautiful rain, why must 20 words, ah, ah good rogue)