Output Hardware

Evaluation Time :
Answers

1. Select the best answer from the given options.

a) Which of the following monitor looks like a traditional television?

• CRT Monitor👈
• LCD Monitor
• LED Monitor

b) Which of the following monitor called the flat panel monitor?

• CRT Monitor
• LCD Monitor👈
• LED Monitor

c) Which monitor screen is used by Laptop?

• CRT
• LCD👈
• LED

d) Which of the following is a hardcopy output?

• Monitor
• Printer👈
• Speaker

e) Which of the following printer produces high quality print?

• Laser 👈
• Dot Matrix
• Ink-Jet

f)  What is the speed measurement unit of Dot matrix printer?

• MBPS
• CPS👈
• MBS

g) Which of the following is a softcopy output device?

• Printer
• Speaker
• Monitor👈

2. Fill in the blanks with suitable words.

a. The output devices display the processed data after processing.

c. A Monitor looks like a television screen.

d. Monitor is a popular output device without which output is not possible.

e. A monitor is a softcopy output device without because the output of monitor can be changed.

f. A  LCD monitors are also called flat panel monitors.

g.  Printer is an output device to display the result in the form of hardcopy.

h. A Laser printer produces high quality print.

i. Dot matrix printers are replaced by Ink-jet and laser printers.

j. Speaker is an output hardware device that is connected with a computer system to produce a sound.

3.Write down the full forms of the followings:

VDU   :    Visual Display Unit

CRT    :    Cathode Ray Tube

LCD   :    liquid Crystal Device

LED    :    Light Embedded Diode

CPS    :    Characters Per Second

4. Write True for correct and False for wrong statements.

a. A monitor looks like a television screen. (True)

b. A monitor is a hardcopy output device. (False)

c. A monitor also called as visual display unit. (True)

d. LCD monitors are replaced by the CRT monitors. (False)

e. LCD monitors uses a large vacuum tube. (False)

f. The laptop computers uses LCD screens. (True)

g. A printer is an output device to display the result in the form of hardcopy. (True)

h. A laser printer produces high quality prints. (True)

i. The fastest laser printer can print up to 20 pages per minutes. (False)

j. Ink-Jet printer is cheaper than a dot matrix printer. (False)

5. Answer these questions:

a. What is output? Define it.

Ans: The result displayed by the monitor after processing i.e. Processed data is called Output.

b. Define a monitor with its types.

Ans: The softcopy output device which displays the result is called Monitor.
There are two types of monitors , they are:

• LCD Monitor
  Liquid Crystal Display Monitor, and it is also known as flat panel monitor
• CRT Monitor
  Traditional type of monitor which uses large vacuum tube.

c. Why is the monitor called softcopy output?

Ans: The monitor is called softcopy output device because its output can be changed as per our wish and desire.

d. Write few lines about CRT and LCD monitors.

Ans: CRT Monitor is the Traditional type of monitor which uses large vacuum tube. It looks like television screen and works in a same way.

However, LCD Monitor is a Liquid Crystal Display and it is also known as the flat panel monitor, which almost replaces CRT monitors nowadays, and are very popular.
 

e. Write the four differences between CRT and LCD monitors.
Hints: Refer book for this question (Page no. 50 and 51)

f. Why is printer called hard copy output/

Ans: Printer is called hardcopy output because the output in the form of hardcopy cannot be changed.

g. What is laser printer/

Ans: The fast and quiet printer which produces high quality print is known as laser printer.

h. Define Ink- jet and Dot matrix printer?

Ans:  

Ink jet printer : The printer which creates an image directly on paper by spraying ink through as many as 64 tiny nozzles is known as Ink-jet printer.

Dot matrix printer : The printer which uses tiny hammers in its print head to strike pins over an inked ribbon to form characters or images on paper is known as Dot matrix printer.

i. What is the speed measurement unit of dot matrix printer?

Ans: The speed measurement of Dot matrix printer is CPS i.e. Character Per Second.