数字数据信号的传输（调制）

（简述）https://blog.youkuaiyun.com/weixin_41516634/article/details/84939034

（最全面）https://blog.youkuaiyun.com/qq_15037231/article/details/54988436

1、数字数据转化为模拟信号

https://blog.youkuaiyun.com/The_V_/article/details/50381216

https://blog.youkuaiyun.com/qq_34840129/article/details/88785772

 

2、模拟信号转化为数字数据

采样 量化 编码