Table of Serial port pin information
Pin Number |
Name |
Description |
---|---|---|
1 |
DCD (Data Carrier Detect) |
Indicates presence of incoming data signal or carrier |
2 |
RXD (Receive Data) |
Data received by the device |
3 |
TXD (Transmit Data) |
Data transmitted by the device |
4 |
DTR (Data Terminal Ready) |
Indicates readiness of the device to communicate |
5 |
GND (Ground) |
Reference ground for the circuit |
6 |
DSR (Data Set Ready) |
Indicates readiness of the remote device |
7 |
RTS (Request to Send) |
Device requests to send data |
8 |
CTS (Clear to Send) |
Device grants permission to send data |
9 |
RI (Ring Indicator) |
Indicates incoming ring signal (telephone line) |
10 |
CD (Carrier Detect) |
Indicates presence of carrier signal (telephone line) |
What is Serial Port?
Serial ports are communication interfaces used for the transfer of data between a computer or a device and external peripherals like printers, scanners, and modems among others. In this article, we are going to discuss every point about Serial Ports.