i should have made the connection . my PC should connect to the serial port of other devices(A Electrical Device) by Serial port, and ther must be a connection for that ( software uses that connection), so how can i make a connection with what you say?
my pc should connect to another device (A Electrical Device) by its serial port, and a connection must have been made ,because a software use that connection, how can i make a connection by what you say?