Computer Ports

All desktop computers have ports which are used to plug external devices into the computer such as monitors, keyboards, printers and scanners.

  • USB– Used for the majority of peripherals. Designed to be a universal connector, to be compatible with any device.
    • Ethernet– Used for networking and board band Internet connections.
  • Modem– Used for data access via a telephone line (eg. Dial-up Internet connections). Slowly being replaced by broadband connections as dial-up becomes an obsolete technology.
    • Headphone jack – Used for connecting sound devices. (USB can also be used)
  • Serial – Used for connecting any device that uses a serial connector. These are being replaced by USB.
  • Parallel– Used for connecting any device that uses a parallel connector. These are being replaced by USB.
    • PS/2– Used for computer mice and keyboards (These are being replaced by USB)
    • Video (VGA) – Used for connecting a monitor / projector with analog signal.
  • Digital Video Interface (DVI) – Used for connecting a monitor, but keeps in the signal in digital format. Usually used for LCD displays.
    • Power – Used for connecting the power lead.
    • Firewire/IEEE 1394 – Used for connecting external hard drives and camcorders.
  • Card Reader– used to read flash memory cards belonging to digital cameras, mobile phones, music players etc.

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