RS232 (DB9) Pin definition:
1: DCD: carrier detection. Modem tells the computer mainly for its in-line state, that Modem dial tone is detected, is online.
2: RXD: This pin is used to receive data sent by external devices; you use the Modem, you will find RXD LED is flashing, data on the RXD pin to enter.
3: TXD: This pin sends data from a computer to an external device; you use the Modem, you will find TXD LED is flashing, indicating the computer is sending data via the TXD pin.
4: DTR: Data
Tuesday, March 05, 2013
Penny USB to Serial Port RS232 9P DB9 Converter Adapter ch340T Chip Support Win7 Linux
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