方案采用一个嵌入式的MODEM作为系统传输数据的MODEM, MODEM和单片机通过串口连接，实现数据的实时传输。
Adoption of MODEM as an embedded system for transmission of data MODEM, MODEM and MCU through serial connections, the real-time transmission of data.
早期的网桥、协议转换器和路由器都是简单的专用硬件设备，通常是通过直接连接到该设备本身串口的终端来配置的。
Early network Bridges, protocol converters, and routers were simple dedicated hardware units typically configured through a terminal directly connected to a serial port on the unit itself.
一条串行线(空调制解调器电缆)将通过机器的串口连接它们。
A serial line (null-modem cable) connects the machines through their serial ports.
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