RS232接哪几个线
时间: 2023-11-01 09:06:36 浏览: 47
RS-232接口通常以9个引脚 (DB-9) 或是25个引脚 (DB-25) 的型态出现。在个人计算机上,一般会有两组RS-232接口,分别称为COM1和COM2。而工业控制的RS-232口一般只使用RXD、TXD、GND三条线。\[1\]\[2\]根据RS-232的接口标准RS-232-C,总共有25条信号线,包括一个主通道和一个辅助通道。\[3\]
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