Listening to serial port on Delphi 7 [closed]

StackOverflow https://stackoverflow.com/questions/5951573

Frage

I am trying to write a program which will listen to the serial input from Arduino board connected via usb, and sending output to serial port (COM4). But I don't know how to get input from serial port in Delphi. I need program to listen to the port, and whenever the input comes, it should react to it. Any suggestions?

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