Page 25 - Viva ICSE Computer Studies 7 : E-book

• A printer is an output device that allows us to print our work on paper.
• Storage devices are used to store information for a longer period of time.
• Hard disk is the main storage medium for computers.
• Compact disk (CD) is an optical storage device.
• Digital versatile disk (DVD) is also called digital video disk. It is very similar to a CD but can store
much more data.
• A pen drive is popularly known as fl ash drive. It is a small pen-like storage device that can be
attached outside a computer at a place called USB port.

A. Fill in the blanks.
1. A _______________ is a machine that can perform a variety of operations in accordance with
a set of instructions called program.

2. Computer works with an interaction of _______________ and _______________.
3. CPU is called the _______________ of computer.

4. The hardware parts that are installed within the CPU cabinet are called _________________.
5. The _______________ is a sheet of plastic that holds all the circuitry to connect various
components of a ____________________.

B. State whether the following statements are true or false.
1. Hardware is of no use unless it is provided with instructions and
data for storage and processing. __________

2. A sound card is one of the most essential parts of a computer system. __________
3. DRAM is costlier but has higher speed than SRAM. __________

4. A drum scanner is the one which uses a photomultiplier tube (PMT) to
scan images. __________
5. One CD can store 600–1150 MB data on it. __________

C. Choose the correct answer.
1. A blu-ray disk can hold up to _______________ of data.

(a) 128 GB (b) 128 TB
(c) 128 MB (d) 128 KB

2. The capacity of DVD ranges from _______ to _______.
(a) 4 GB, 8 GB (b) 4.7 GB, 8.5 GB
(c) 4.7 MB, 8.5 MB (d) 4.7 GB, 8.5 GB

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