1.1.3 Input, Output and Storage

Input, Output and Storage:

  • Input, Output & Storage Devices:
    • Input Devices:
      • Keyboards
      • Mice
      • Microphones
      • Scanners
      • Joysticks
    • Output Devices:
      • Printers
      • Speakers
      • Monitors
      • Actuators
    • Storage Devices:
      • Hard disks
      • Magnetic tapes
      • CDs
      • DVDs
      • Blu-rays
    • Different scenarios which would involve specific input, output and storage devices, e.g. a hospital
  • Magnetic Storage Devices:
    • Definition:
      • A storage of data on a magnetised medium. Uses different patterns of magnetisation in a magnetisable material to store data and is a form of non-volatile memory
    • Examples:
      • Magnetic tape
      • Floppy disks
      • Hard disk drives
    • Speed:
      • Slowest out of the three
    • Capacity:
      • Up to a terabyte
    • Average price per Gb:
      • 6p
  • Flash memory:
    • Definition:
      • An electronic (solid state) non-volatile computer storage medium that can be electronically erased and reprogrammed
    • Examples:
      • Memory sticks
      • Camera memory cards
      • Solid state hard drives
    • Speed:
      • Fastest of the three
    • Capacity:
      • 2Gb upwards
    • Average price per Gb:
      • 25p
  • Optical Storage:
    • Definition:
      • Storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light, usually a beam laser…


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