The required reading of data communication. It covers the basic concepts of data communication: data, signal, channel, communication mode, transmission medium, codec, modulation and demodulation, multiplexing, data exchange, error control, etc.

Filename	Size	Update
数据通信基础培训.ppt	1751552	2017-11-20
通信传输相关概念.docx	22856	2017-11-20

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