Optical Storage uses indentations on the surface of a disc to represent binary data.
Optical Storage uses indentations on the surface of a disc to represent binary data.
CDs, DVDs, and Blu-Ray discs are all forms of Optical Storage.
CDs store around 700MB of data; DVDs store roughly 4.7GB; and Blu-Ray discs can hold up to 25GB.
There are three forms of Optical Storage discs: ROM (read-only), R (write-once), and RW (rewritable)
Optical discs are very portable, and quite cheap (<5p per GB).
However, they can be damaged easily by scratches, so are not very durable. Also, they have very low capacity, and slow read/write speeds.
Would a video game be stored on DVD-ROM, DVD-R, or DVD-RW?
Tap/click to reveal DVD-ROM, because it shouldn't be rewritten.