![]() Then, on the receiving side, software can read the state of the pins (on or off) and interpret the value you sent. The software on the sending side will turn each pin on or off according to the value you wish to send. ![]() Each pin in the cable is designated for a specific purpose but typically only pins 2 through 9 are used to send data. Inside each port is a “pin” that corresponds to one of the wires in the cable. The parallel port can send and receive data through a cable that connects the devices. Also, check that your computer has an appropriate port installed. How can I tell if I can use parallel port communication?Ĭheck the manual of your external device to see if it can use parallel port communication and what values it may require.
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