Unit 18: Vocabulary

Please study the 11 vocabulary below and press the 'Mark Complete' button.
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BD (Blu-Ray Disc)
an optical read-only disc storage media format used for data or movie storage with same dimensions as a standard DVD or CD; holds up to 50 GB or 6 times the storage of a DVD.
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The name Blu-ray Disc comes from blue-ish colored laser used to read and write data to this type of disc.
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CD-ROM (compact disc read only memory)
an optical storage medium which can store approximately 650 MB of read-only data
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The CD-ROM has almost been completely replaced by the much more efficient DVD-ROM technology.
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CD-R (compact disc recordable)
an optical, recordable storage medium that allows a user to write one time up to 650 megabytes of data.
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The nervous author backed up his novel every day on a new CD-R.

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