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Different Types of Ports

PS/2 port, also known as serial port

Transfers data one bit at a time

Uses a 6-pin, mini-DIN configuration, which look like a small, round port

Used to be the de facto standard for keyboard and mouse connections, however, they are gradually being replaced by USB ports.

DB-9 port

Also becoming obsolete

Used to connect PDA devices before the advent of USB ports

Connects external modem, barcode scanner, and other older electronic devices

DB-25F, also known as Parallel port

Transfers data one byte at a time

Requires a 25-pin male connector (DB-25M) on the cable

Can be used for printers or external drives

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