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Compact Disc (CD)
The CD drive reads information stored on a compact disc (CD). CD is an external storage
device. It can hold up to 700 MB of data. Earlier, CD drive was connected inside the CPU
box but now it is not. Now, we can connect it using a USB port.
Digital Versatile or Video Disc (DVD)
Earlier, DVDs were widely used in computers. At that time, they had
became a popular medium for storing information and video. The 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.
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.
Flash Drive
The Flash Drive is a small portable data storage device integrated with a USB (Universal
Serial Bus) connector.
Pen Drive
It acts as a portable hard drive and is easy to use as it is small and can
be carried in a pocket and plugged into any computer with a USB drive. A
pen drive has a storage capacity of up to 1 TB.
The pen drive was invented in 1998 by IBM.
Memory Card
It is commonly known as a multimedia memory card. It is very small in
size, usually 1–1.5 inches. These are used in mobile phones and digital
cameras. You need to have a card reader to read the stored data on the
memory card.
10 Computer Genius (V2.1)-V

