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Introduction to storage devices


WHAT IS A STORAGE DEVICE?

A storage device is a device on which data can be stored. A very common example is a USB memory stick, or simply, a USB.

TYPES OF STORAGE DEVICES

Magnetic storage devices

A magnetic storage device is a storage device that stores data using tiny magnetised dots. These dots are created, read and erased using tiny electromagnets.

Examples:

  • Hard disk (magnetic disc)
  • magnetic tape
  • floppy disc etc...

Optical storage devices

An optical storage device is a storage device that stores data using a laser beam. Holes are formed in the storage medium (device) that are read using a laser beam.

Examples:

  • CD disc
  • DVD disc
  • Blu-ray disc etc...

Solid-state storage devices

A solid-state storage device is a storage device that stores data using no moving parts. It uses flash memory. This is the same tech used in USBs.

Examples:

  • USB memory stick
  • Smart cards
  • SD cards etc...

Thank you for reading. Stay tuned to find out more!

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