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Computer Ports for External Device Connectivity

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  1. Socket for external devices to connect • to the system unit. • Some ports connect directly to the systems board while others connect to cards that are inserted into slots on the systems board. • Some ports are standard features of most computer systems and others are more specialized. PORTS

  2. Standard ports • Serial ports - Use for wide variety purposes. - They are often used to connect a mouse, keyboard, modem and many others to system unit. - send data I bit at a time and very good for sending information over long distance.

  3. ii) Parallel ports - Used to connect external devices that need to send or receive a lot of data over a short distance. - These ports usually send 8-bits of data simultaneously across eight parallel wires. - Parallel ports are mostly used to connect printers to the system unit.

  4. iii) Universal serial bus (USB) ports - Replacing serial and parallel ports. • They are faster, and one USB can be used to connect several devices to the system unit. iv) FireWire ports • Also known as high performance serial bus. • Fast as USB 2.0 ports and provide connections to specialized FireWire devices such camcorders.

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