A Port is the interface used to connect external devices to computer.
Ports are of various types based on the type of communication interface:
For example:
Serial port : information transfer takes place one bit at a time.
Parallel port : transfer of multiple bits at a time.
Ethernet : used for connecting network cable
USB : Universal Serial Bus
Computer peripherals like mouse,keyboard, modem, printer etc connect to the computer via the port which is in accordance with their specified communication interface.
