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Input Output Ports

  • Difficulty Level : Easy
  • Last Updated : 02 Sep, 2020

Ports :

It the connection point acts as interface between the computer and the external devices like: printer, modem, etc.

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There are two types of ports :



1. Internal Port

It connects the system’s motherboard to internal devices like hard-disk, CD drive, internal Bluetooth etc.

2. External Port

It connects the system’s motherboard to internal devices like mouse, printer, USB etc.

Types of ports

Some important types of ports are as per follows :

1. Serial Port :  

  • Used for external modems and older computer mouse
  • Two versions-9pin,25pin
  • Data travels at 115 kilobits per second

2. Parallel Port :          

  • Used for scanners and printers
  • 25 pin model

3. Universal Serial Bus (or USB) Port :

  • It can connect all kinds of external USB devices such as external hard disk, printer, scanner, mouse, keyboard, etc.
  • Data travels at 12 megabits per seconds.

4. Firewire Port :

  • Transfers large amount of data at very fast speed.
  • Connects camcorders and video equipment to the computer.
  • Data travels at 400 to 800 megabits per seconds.

5. Ethernet Port :

  • Connects to a network and high speed Internet.
  • Data travels at 10 megabits to 1000 megabits per seconds depending upon the network bandwidth.
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