lesson1 and 2.pptx

7/29/2019 lesson1 and 2.pptx

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Media is something that can be used for presentation ofinformation.

Two basic ways to present some information are:

Unimedia presentation: Single media is used to presentinformation

Multimedia presentation: More than one media is used topresent information

Multimedia presentation of any information greatly enhances

the comprehension capability of the user as it involves use ofmore of our senses

Lesson 1 Introduction to Multimedia


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Multimedia is the media that uses multiple formsof information content and information processing

(e.g. text, audio, graphics, animation, video,interactivity) to inform the user.Multimedia also refers to the use of electronicmedia to store and experience multimedia content.


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Multimedia means that computer information canbe represented through audio, graphics, image,video and animation in addition to traditional

media(text and graphics).

Elements of Multimedia System


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Categories of Multimedia

Multimedia may be broadly divided into

linear

Non-linear categories(hypermedia content)

Multimedia presentations can be live or recorded.


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An extension to hypertext that supports linkinggraphics, sound, and video elements in additionto text elements. The World Wide Web is a partialhypermedia system since is supports graphicalhyperlinks and links to sound and video files

hypermedia
http://www.webopedia.com/TERM/H/hypertext.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/H/hyperlink.htmlhttp://www.webopedia.com/TERM/H/hyperlink.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/W/World_Wide_Web.htmlhttp://www.webopedia.com/TERM/H/hypertext.html


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Hypermedia

NetworkedHypermedia =Hypertext +

Multimedia + Network


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Applications of Multimedia

Multimedia finds its application in various areasincluding, but not limited to,

advertisements, art, education, engineering,

medicine, mathematics, business, scientificresearch ,temporal applications.


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Convergence of Multimedia

(Virtual Reality)At the convergence of technology and creativeinvention in multimedia is virtual reality, or VR.Helmets, and special gloves, attempt to place youinside a lifelike experience.

VR requires terrific computing horsepower to bereality. In VR, your cyberspace is made up ofmany thousands of geometric objects plotted inthree-dimensional space.

the more objects and the more points that describethe objects, the higher resolution and the morerealistic your view.


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(Virtual Reality)

Helmets

gloves


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The four basic stages of multimedia project development :

1. Planning and Costing

2. Designing and Producing3. Testing

4. Delivering

Stages of Multimedia Application Development


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List five applications of multimedia

Check Your Progress 1


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Your answers may include the following

Education

Medicine

Engineering

Industry Creative Industry

Mathematical and scientific Industry

Commercial

answers to Check your progress


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Multimedia Computer System

Multimedia computer system is a computer having

capability to integrate two or more types of media(text, graphics, animation, audio, and video)

In general, size for multimedia information is muchlarger than plain text information

Multimedia computer systems require:Faster CPU

Larger storage devices (for storing large data files)

Larger main memory (for large data size)

Good graphics terminals

I/O devices to play any multimedia


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Any multimedia application consists any or all of the following

components:1. Text : Text and symbols are very important for communication

in any medium.

2. Audio : Sound is perhaps the most element of multimedia. It

can provide the listening pleasure of music,3. Images : Images whether represented analoge or digital plays

importers role in a multimedia.

4. Animation : Animation is the rapid display of a sequence of

images of 2-D artwork or model positions in order to create anillusion of movement

Multimedia Building Blocks


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All multimedia content consists of texts in someform. Even a menu text is accompanied by asingle action such as mouse click, keystroke or

finger pressed in the monitor (in case of a touchscreen). The text in the multimedia is used tocommunicate information to the user.

Lesson 2 Text


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Words and symbols in any form, spoken or written, arethe most common system of communication.Most academic related text such as journals, e-

magazines are available in the Web Browser readableform.

Text in Multimedia


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Text Media

Alphanumeric characters are used to present information

in text form. Computers are widely used for textprocessingKeyboards, OCRs(OPTICAL CHARACTERRECOGNITION.), computer screens, and printers are

some commonly used hardware devices for processingtext mediaText editing, text searching, hypertext, and textimporting/exporting are some highly desirable features of

a multimedia computer system for better presentation anduse of text information


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A typeface is family of graphic characters that usually

includes many type sizes and styles.A font is a collection of characters of a single size andstyle belonging to a particular typeface family.

Typical font styles are bold face , italic, and underliningThe size of a text is usually measured in points. One

point is approximately 1/72 of an inch i.e. 0.0138.

Fonts and Faces


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Typefaces of fonts can be described in many ways, but themost common characterization of a typeface is serif andsans serif.

The serif is the little decoration at the end of a letter stroke.

Times, Times New Roman, Bookman are some fonts

which comes under serif category.

Arial, Optima are some examples of sans seriffont.


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F F(Serif Font) (Sans serif font)


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Sans serif fonts work better than serif fonts. As shown in

figure on next slide.The top figure shows good use of fonts and color . It has aconsistent color scheme, uses large and all sans-serif(Arial) fonts.

The bottom figure is poor, it used too many colors, and theyare inconsistent. The red adjacent to the blue is hard tofocus on, because the human retina cannot focus on these

colors simultaneously. The serif font is said to be hard toread in darkened, projection setting.


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The British Royal university has manycollage on it. IT is one of its collage

departments

The British Royal university has manycollage on it. IT is one of its collage

departments


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It is a very difficult process to choose the fonts to be

used in a multimedia presentation. Following are afew guidelines which help to choose a font in amultimedia presentation.

Selecting Text fonts

In large size headlines, the spacing between the letters can be

adjustedThe different effects and colors of a font can be chosen in order tomake the text look in a good manner.Drop caps and initial caps can be used to accent the words.

For special attention to the text, the words can be wrapped onto asphere or bent like a wave.Meaningful words and phrases can be used for links


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Check Your Progress 1.List a few fonts available in your computer


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ASCII Character set

The American standard code for informationinterchange (SCII) is the 7 bit character coding systemmost commonly used by computer systems in the

United states and abroad.ASCII assigns a number of value to 128 characters,

including both lower and uppercase letters, Arabicnumbers and math symbols.

32 control characters are also included.

Character set and alphabets:


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The ASCII Extended Character set

A byte which consists of 8 bits, is the most commonlyused building block for computer processing. ASCIIuses only 7 bits to code is 128 characters; the 8th bit of

the byte is unused. This extra bit allows another 128characters to be encoded before the byte is used up, andcomputer systems today use these extra 128 values foran extended character set.



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The Extended Character set


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The Extended Character set


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Unicode makes use of 16-bit architecture for foreign

text and character encoding.Unicode uses about 65,000 characters from all knownlanguages and alphabets in the world.

Microsoft, Apple, Sun, Netscape, IBM, Xerox andNovell are participating in the development of thisstandard .

Microsoft and Apple have incorporated Unicode into

their operating system.

Unicode


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00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F

0000 -Symb

ols

0020 ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; ?Numb

er

0040 @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _Alphabet

0060 ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~

0080 00A0

00C0 Latin

00E0

0100 0120 0140 0160 0180 01A0 01C0 01E0 0200 0220 0240 0260

0280 02A0 02C0

02E0 0300 0320

0340

0360 0380 Greek03A0 03C0 03E0


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00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F

0400

Russian

Cyrillic

0420

0440 0460

0480 04A0 04C0 04E0 0500 Komi

0520 Armenian

0540 0560

0580 Hebrew

05A0

05C0

05E0 Yiddish

0600 Arabic

0620 0640 0660

068006A0

06C0

06E0

0700

Syria

c

0720

0740

0760

0780 Thaan

a

07A0


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3000 Symb

ols3020

3040 Hiragana

3060

3080

30A0

Katakana

30C0

30E0

3100 Bopomofo

3120 Hangul

3140

3160

3180 Kanbun

31A0 Bopomofo

31C0 CJK31E0

3200 Hangul

3220 CJK3240

3260 Hangul

3280 CJK32A0

32C0 Katakana

32E0

3300 Katakana

3320

3340

3360 CJK3380

33A0

33C0 33E0


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There are several software that can be used to createcustomized font. These tools help an multimedia developerto communicate his idea or the graphic feeling. Using thesesoftware different typefaces can be created.

In some multimedia projects it may be required to createspecial characters. Using the font editing tools it is possibleto create a special symbols and use it in the entire text.

Font Editing and Design tools


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Special font editing tools can be used to make yourown type so you can communicate an idea or graphicfeeling exactly

1. Fontographer:It is macromedia product, it is a specialized graphicseditor for both Macintosh and Windows platforms. You

can use it to create postscript, truetype and bitmappedfonts for Macintosh and Windows.



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2. Making Pretty Text:

To make your text look pretty you need a toolbox fullof fonts and special graphics applications that canstretch, shade, and color your words into real artwork.

Pretty text can be found in bitmapped drawings wherecharacters have been manipulated and blended into agraphic image.


i i i


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3-Hypertext:

Multimedia is the combination of text, graphic, andaudio elements into a single collection or presentationbecomes interactive multimedia when you give the usersome control over what information is viewed and

when it is viewed.When text is stored in a computer instead of on printed

pages the computers powerful processing capabilities

can be applied to make the text more accessible andmeaningful. This text can be called as hypertext.


F Edi i d D i l


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Two Buzzwords used often in hypertext are linkandnode. Links are connections between the conceptual

elements, that is, the nodes that may be consists oftext, graphics, sounds or related information in theknowledge base.

4. Hypermedia Structures:


F Edi i d D i l


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5. Searching for words:

Following are typical methods for a word searchingin hypermedia systems: Categories, Word

Relationships, Alternates, Association, Intermediatewords, Frequency.



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Create a new document in a word processor. Typea line of text in the word processor and copy itfive times and change each line into a differentfont. Finally change the size of each line to 10 pt,

12pt, 14pt etc.Now distinguish each font family and thetypeface used in each font.

Lesson-end activities

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