Page 17 - Viva ICSE Computer Studies 4 : E-book

Pen Drive/Flash Drive

Pen drive is also called a flash drive. It is a portable Universal Serial Bus (USB) flash

memory device. It resembles a small pen. It is small enough to fi t into a pocket and
can store a large amount of data such as 4 GB, 8 GB and 16 GB. It is used as a standard
storage device for data transfer from one computer to another.

Blu-Ray Disk

Blu-ray Disk (BD) is an optical plastic disk of Learn More
the same size as DVDs and CDs. The storage
Blu-ray disk is called so because a blue
capacity of a conventional Blu-ray disk is
laser is used to read the disk which
25 GB per layer, with dual layer disks having allows information to be stored at a
a capacity of 50 GB. The major application of greater density than is possible with

Blu-ray disks is that it is used as a medium for red laser used for DVDs.
storage of video data such as feature films.
Blu-ray disk is associated with a set of multimedia formats that allow the video and

audio fi les to be stored on it with greater defi nition than on DVD.

Memory Stick

Memory stick is a standard storage device
for data transfer in small digital electronic Think and Discuss
products. It is available in 4 MB, 8 MB,
Ayaan wants to give a soft copy of an
16 MB, 32 MB, 64 MB and 128 MB storage
assignment done in Word 2016 to his
sizes, and as a kit with a PC card adapter. friend. Which device can you suggest
The 8 MB memory stick has more than five him to copy the assignment?
times the storage capacity of a standard

3.5 inch floppy disk.

Computer Etiquette

Always handle your storage devices properly.

Tech Terms

Computer: A smart machine
Bit: Single digit in binary numbers which can be either 0 or 1
Byte: A group of 8 bits

Primary memory: Main memory of a computer

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