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Types of CDs:
1. CD-ROM (Compact Disc Read-Only Memory): A CD-ROM is
a pre-recorded CD containing data or software that has been
written at the time of manufacturing. The data stored on a
CD-ROM cannot be modified or erased, making it a read-Only
storage medium. CD
2. CD-R (Compact Disc Recordable): A CD-R can be used to write data by the
user only once. This data cannot be changed or erased later.
3. CD-RW (Compact Disc Rewritable): A CD-RW can be used to write data
again and again. The data stored can be erased and modified as many times as
required.
Digital Versatile or Video Disc (DVD)
DVDs are widely used and have become a popular medium for
storing information and video. A DVD is almost similar to a CD.
Even the working is also similar. The only difference is that it can
hold more information than a CD. DVDs are commonly used not
only for storing and viewing movies but also for storing various DVD
types of data, including software, documents, and multimedia.
Clickipedia
The pen drive was invented in 1998 by IBM.
Blu-ray Disc
A Blu-ray disc is an optical disc. It is used for storing large amounts
of data, and playing videos. The main difference between DVDs and
Blu-ray discs is storage capacity. Blu-ray discs can hold up to 25 GB
of data on a single layer. This is significantly more than DVDs, which
typically hold up to 4.7 GB on a single layer. Blu-ray Disc
Flash Memory
Flash memory is a type of storage that keeps information safe even when the power
is turned off. It is a type of non-volatile storage medium that can be electrically
erased and reprogrammed.
10 iPro (Ver. 4.1)-IV

