COM port
From The Glossary of Digital Photography
An abbreviation for Communications port. The 8-bit serial communications port used on PC computers on a DOS computer. It is also used for a serial RS232 data port under the Windows operating system.
ONLINE GLOSSARY OF DIGITAL PHOTOGRAPY
An abbreviation for Communications port. The 8-bit serial communications port used on PC computers on a DOS computer. It is also used for a serial RS232 data port under the Windows operating system.
