What is A Cd rom
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Answers
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CD-ROM stands for Compact Disc Read Only Memory
It is a pre-pressed optical compact disc that contains data.
Computers can read—but not able to write or erase — CD
The "ROM" part of the term means the data on the disc is "read-only," or cannot be altered or erased.
Because of this feature and their large capacity, CD-ROMs are a great media format for retail software.
The first CD-ROMs could hold about 600 MB of data, but now they can hold up to 700 MB. CD-ROMs share the same technology as audio CDs, but they are formatted differently, allowing them to store many types of data.
Answer:
CD-ROM (Compact Disc-Read Only Memory)
◆ This is one of the popular optical storage devices with a medium storage capacity.
◆ It can store upto 800 MB of data in it. ◆ These are made up of polycarbonate plastic having 1.2 millimetre thickness.
◆ It has a thin layer of reflection metal like aluminium enclosed between the layers of polycarbonate.
◆ To read the data from the CD-ROM high power laser beam is used.
◆ Different types of CD's are available like CD-R (Compact Disc Recordable) and CD-RW (Compact Disc Rewritable).
◆ Data on the CD-R can be recorded only once using CD writer but can be read many times whereas a CD- RW can be the recorded by deleting its previous contents.
