Class 10, NBSE

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CHAPTER 5: CONTENT TECHNOLOGY iii. Sound and Audio: It is meaningful "speech" in any
language. It can be a whisper to a stream. It can provide
I. MULTIPLE CHOICE QUESTIONS the listening pleasure of music. The word sound is used
for analog form and the digitized form of sound is called
1. Data contains as audio.
iv. Images and Video: Image is another important part
Answer: (d) All of these of multimedia. The text can be very easily explained if it
contains images. Images make the presentation
2. Which of the following is a type of data? attractive. Video enlivens the presentation and attracts
the audience.
Answer: (d) All of these. v. Animation: Animation makes static presentations
come alive. It is visual change over time and can add
3. Which of the following is the most complex form of
great power to our multimedia projects. Animation is
data?
created from drawn pictures and video is created using
Answer: (a) Video Data real time visuals.

4. A sound card is used to………….. 2. Differentiate between Data and Information

Answer: (c) Amplify Data Answer: The difference between data and information
are as follows:
5. Audio is a........................

Answer: (b) Digitized form of sound Data Information

6. Which of the following is a not hardware Data is a form of rows Information is the result of
requirement for audio? and figures processed data

Answer: (c) Keyboard Data can be collected in Information is presented in

un-sequential manner. a meaningful form.
7. Which of the following device is used to convert
images to digital format? Data is an input form Information is output form.

Answer: (b) Scanner Data cannot be Information is complete

understood. and understandable.
II. SHORT ANSWER QUESTIONS

1. What are the elements of multimedia? 3. Name some display devices.

Answer: Multimedia is an integration of sound, Answer: Some of the display devices are: HDTV, SVGA,
animation, images, video etc. along with computing High Resolution monitors
technology. With the advancement of technology, the
multimedia has become very popular among the users 4. Define Text.
and young generation. The elements of multimedia are
as follows: Answer: Text is the most common item for the
multimedia. It is written material. The text is presented
i. Text: Text is the most common item for the with different font styles, font colours and size to look
multimedia. It is written material. The text is presented more attractive. The hardware requirements for text
with different font styles, font colours and size to look are: Keyboards, OCR, Computer screens and printers.
more attractive. Whereas the software requirements for text are: Text
ii. Hardware Requirements for Text: Text processing, editing, Text Style, Text Searching, Hypertext, Text
with the use of multimedia computers, generally Importing and Exporting.
involves the following hardware devices.
5. What are sound cards?

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Answer: Sound cards are computer audio devices that v. Display Devices: HDTV, SVGA, High Resolution
convert data into audio signals and audio signals into monitors.
data. In other words, the sound card is the device that vi. Output Devices: Laser printer/Inkjet printer, quality
makes audio input and output from a computer speakers, sound card, headphone.
possible. Without a sound card, a computer will not be
capable of audio playback. There are several types of III. LONG ANSWER QUESTIONS
sound cards, including onboard sound, dedicated
internal sound cards and external sound cards. Laptops 1. What are the uses of multimedia?
and low-end PCs often have built-in sound cards.
Internal dedicated sound cards are cards installed inside Answer: The uses of multimedia are as follows:
a computer's case, which are distinct from the
motherboard and plug into the motherboard through i. We can add sound effects to your files.
an expansion slot such as PCI slot. External sound cards ii. We can create 3-D effects in the images.
are cards that plug into a computer through an external iii. We can build various business presentations using
port such as a USB port. pictures, objects, music, sounds, video etc. and these
can be shown using projector.
6. List few software programs used for computerized iv. We can create various greeting cards.
animation. v. We can interact with your computer by spoken words
also.
Answer: The following software capabilities are highly vi. We can record and edit sounds effects and music
desirable in a multimedia computer system with setting on our computer.
animation facility: vii. We can create our home theatre using our P.C.,
television set and audio system. To connect to our
i. Animation creation software: It allows the user to television set with P.C., video card is required. We have
create animation sequences from scratch by using a to change your display setting when we connect our
mouse and various simple objects, such as lines, circles P.C. to a television set.
and polygons, with various supporting colors.
ii. Screen capture software: It is used to capture the 2. What is sound and video? Write hardware
displays of a computer screen as graphic images, which requirements for audio.
can be used in animation.
iii. Animation clips: This is a library of animation clips Answer: Sound is meaningful "speech" in any language.
from which one can select and directly import an It can be a whisper to a stream. It can provide the
animation clip and use it in a multimedia application, listening pleasure of music. The word sound is used for
saving the time and effort, which might otherwise be analog form and the digitized form of sound is called as
required to create a similar animation clip. audio.

7. What are the essential hardware requirements for The different types of sound files are:
multimedia? MIDI- .mid, .midi, .smf
MP3- .mp3
Answer: The following are the hardware requirements MPEG- .mla, .mls, .mpg, .mpv
for multimedia: WAV- .wav

i. Computer Systems: Multimedia Desktop machines, Video enlivens the presentation and attracts the
Workstations, MPEGNIDEO Hardware with Coloured audience.
Monitor (VGA or TFT).
ii. Capture Devices: Video Camera, Video Recorder, The hardware requirements for audio are as under:
Audio Microphone, Keyboards, mice, graphics tablets
iii. Storage Devices: Hard disks, CD-ROMs, DVD, pen i. Sound Cards: Sound cards are computer audio devices
drives etc . that convert data into audio signals and audio signals
iv. Communication Networks: Mainly Internet. into data. In other words, the sound card is the device
that makes audio input and output from a computer

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 Class 10, NBSE
FIT notes
Via: onlinefreenotes.com

possible. Without a sound card, a computer will not be animation sequences) because subsequent frames,
capable of audio playback. which make up the animation can be displayed quicker.
ii. Speakers: Speakers are sound devices that connect to
the sound card and emit sound based on audio The following software capabilities are highly desirable
signalsreceived from the sound card. Speaker systems in a multimedia computer system with animation
can be built into a computer monitor or consist facility:
ofmultiple external speakers placed around the
computer. Speaker systems often include a i. Animation creation software: It allows the user to
subwoofer,which provides additional "bass" (low- create animation sequences from scratch by using a
pitched sound). mouse and various simple objects, such as lines, circles
iii. Headphones: Headphones are audio output devices and polygons, with various supporting colors .
that consist of two relatively small speakersthat fit over ii. Screen capture software: It is used to capture the
or inside the ears. Headphones are a common displays of a computer screen as graphic images, which
alternative to speakerswhen using computers in public can be used in animation.
places, where audio playback might distract orannoy iii. Animation clips: This is a library of animation clips
others. from which one can select and directly import an
iv. Microphones: Microphones are audio input devices animation clip and use it in a multimedia application,
that send audio information to a sound card. saving the time and effort, which might otherwise be
Microphones allowfor activities such as voice recordings required to create a similar animation clip. This is also
and live computer chatting through programs like useful, if one does not have an animation creation
TeamSpeak,Ventrilo, Oovoo and Skype. software.

3. Define Animation. Also write its hardware and 4. What is the role of audio in multimedia?
software requirements.
Answer: The digitized form of sound is called
Answer: Animation makes static presentations come as audio. Audio is used in computers in order to
alive. It is visual change over time and can add great enhance the multimedia applications in various ways.
power to our multimedia projects. Carefully planned, Audio can be used to enhance multimedia applications
well-executed video clips can make a dramatic
in a number of ways, for example in delivering lectures
difference in a multimedia project. Animation is created
from drawn pictures and video is created using real over the web, music used to add interest and emotion
time visuals. The hardware requirements of animation to a presentation, and other non-speech audio used as
are: part of a general interface.

i. Image generation tools and devices, such as scanners, It can convey meaning, providing an extra channel of
digital cameras and video capture board interfaced to information. It allows redundancy to be incorporated
some standard video source, like video camera or video into the presentation of information, so that if the
cassette recorder (VCR), are used to generate images to meaning is unclear to a user using visual information
be used in animation . alone, the audio may clarify it. It can add interest to a
ii. Computer monitors with image display capability is presentation or program.
the minimum requirement for outputting (displaying)
animation. In addition, multimedia computer systems *****
capable for handling animation also require a graphics
accelerator board, which not only controls the
resolution and number of colors of display, but also
speeds up the refresh rate. Refresh rate is the time
taken to paint the computer screen with a new image
frame, replacing the previous images frame. Increased
speed, due to the use of graphics accelerator board,
smoothes out the movement (avoids flickering of

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