What are examples of Optical Media?

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Optical media is a storage media that hold content in digital form on which information is written (encoded) and read (decoded) by using a laser device. A optical media usually is a flat, circular disc which encodes binary data (bits) on a special material , often aluminium, on one of its flat surfaces.

Optical discs are not based on magnetic charges like hard drives are, the discs are less likely to lose their data and have a longer shelf life.

Examples of magnetic optical media are:

  • Optical Disc (CD, DVD)
  • CD-ROM (CD reader),
  • CD-RW (CD writer)
  • DVD-ROM (DVD reader)
  • DVD-RW (DVD writer)

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What units of measurement are used for data storage?

Data storage is also called storage or memory, it refers to computer components and recording media that retain digital data used for computing.

Thus, for example, documents and images are measured in bytes or kilobytes, pen drives (USB) are measured in megabytes, while hard drives are measured in terms of gigabytes or terabytes.

What is input/output or storage device?

An input/output device is also known as storage device. These computer devices preserve information for retrieval.

What is Computer Data Storage?

Computer data storage, computer memory, and often casually storage or memory refer to computer components, devices and recording media that retain digital data used for computing for some interval of time.

Computer data storage provides one of the core functions of the modern computer, that of information retention.

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