State the name of 3 ports and their uses
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External devices are connected to a computer using cables and ports. Ports are slots on the motherboard into which a cable of external device is plugged in. Examples of external devices attached via ports are the mouse, keyboard, monitor, microphone, speakers, etc.
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a.Serial Port
Used for external modems and older computer mouse
b. Parallel Port
Used for scanners and printers
c. PS/2 Port
•Used for old computer keyboard and mouse
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