Question

define optical disc and its type​

Answer 1

Answer:

Optical-disc definitions

A direct access storage device that is written and read by light. The most common types are CD, DVD and Blu-ray. ... They include the music CD, CD-ROM, DVD-ROM, DVD-Video and BD-ROM (Blu-ray).

Explanation:

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Answer 2

Answer:

plastic-coated disk on which data, such as text, music, or video, is digitally stored as microscopic regions of varying reflectivity and is read by scanning the surface with a laser.

There are three main types of optical media: CD, DVD, and Blu-ray disc. CDs can store up to 700 megabytes (MB) of data, and DVDs can store up to 8.4 GB of data.

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