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Input and output ports advantage and disadvantage-computer world

 Input and output ports advantage and disadvantage

Input/output ports

Parallel port : Parallel port is a type of interface found on computers for connecting various peripherals. Data flows through 8 wires simultaneously and transmit 8 bits of data in parallel.
Serial port :  A serial port transmits one bit of data through a single wire.serial port is used to connect plotters, Bar-code reader etc.
Universal serial port(USB) : It is a common and popular external port available with computers.Normally two to four USB ports are available on the computer.
Fire-wire : Hard disk drive and new DVD drives connect through fir-wire. It is an expansive technology used for large data movement.
Advantage of input/output ports : 

  1. Parallel port transmit 8 bit of data in parallel.
  2. Input/output port are used to connect peripheral device to the computer.
  3. A single USB port can support connection of up-to 127 devices.
  4. Input/output are used to connect audio and video multimedia devices to the computer.

Disadvantage of input/output port : 

  1. It require more power.
  2. If too much power is being used by a expanderas of multimedia expanderas, the computer may not start.
  3. Device connected to the port ex pander, such as a flash drive, require too much power and may slow at all.

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