Basics of Multimedia

Topics: Multimedia, Computer graphics, Computer Pages: 5 (1066 words) Published: July 23, 2010


Dolon Mukherjee
Lecturer at George College of Management and Science, Kolkata, INDIA


Well, before learning the definition of multimedia, let us know the meaning of medium. The entire topic is presented in question and answer format, so that it helps the reader to quickly understand and remember it.

Q) What is medium ?

Ans) A medium (plural media) is something that can be used for presentation of information. There are two basic ways to present some information :-

a) Unimedium presentation :- In this case a single medium is used to present information. For e.g:- a music system is an example of unimedium device because it presents information by using sound medium only. b) Multimedia presentation:- In this case , more than one medium is used to present information. For e.g:- , a TV system is a multimedia device because it presents information by using both sound and video media.

Q) What is Multimedia ?

Ans) Multimedia can be defined as the use of more than one of the media (Text, Graphics, Animation, Audio and Video) for information presentation .

Q)What is a Multimedia Computer System ?

Ans) A multimedia computer system can be defined as a computer having capability to integrate two or more types of media such as text, graphics, animation, audio and video for generation, storage, representation, manipulation and access of multimedia information.

Q) Requirements of Multimedia computer system :-

Ans) Generally, data size of multimedia information is much larger than textual information. Due to this, multimedia computer systems require:-

a) Faster CPU ( for quicker processing of large amount of data) b) Larger storage devices ( for storing large data files) c) Larger main memory ( for running programs with large data size) d) Devices like keyboard, mouse, joystick, touch screen by which the user can interact with the system. e) A high resolution screen and graphics accelerator card that can output good quality still images, video clips as well as animations, text and graphics. f) Speakers for speech and music output.

g) Microphone for audio recording.
h) Sound card to capture, digitize and edit audio and video material.

Q) Components of Multimedia

Ans) The various components of Multimedia are as follows :-
a) Text :- Inclusion of textual information in multimedia is the basic step towards development of multimedia software. Alphanumeric and special characters are used to present information in text form. Text can be of any type, may be a word, a single line, or a paragraph. The textual data can be developed using any text editor. However, to give special effects, one needs graphics software which supports this kind of job. Even one can use any of the most popular word processing software to create textual data for inclusion in multimedia. The text can have different type, size, color and style to suit the professional requirement of the multimedia software. b) Graphics:- Computer graphics deals with generation, representation, manipulation and display of pictures with a computer. Graphics is an important component of multimedia because a picture is a powerful way to illustrate information i.e something that can’t be described with mere written words can be describe easily with the help of pictures. For e.g:- , in a multimedia application for educating small children, displaying photograph of a horse along with its textual description, makes illustration much more effective.

c) Animation :- Computer animation deals with generation, sequencing and display a set of images (called frames) to create an effect of visual change or motion, similar to a movie film (video). It uses the concept of ‘Persistence of vision’. It is an important component of multimedia, because just as a picture is a powerful way to illustrate information, a small...
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