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YEAR SEMESTER 2
THEORY
Version 1: December 2008
UNESCO-NIGERIA TECHNICAL &
VOCATIONAL EDUCATION
REVITALISATION PROJECT-PHASE II

NATIONAL DIPLOMA IN
COMPUTER TECHNOLOGY

(COM225)

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Table of Contents
INTERNET ................................................................................................................. BENEFITS OF INTERNET APPLICATION ........................................................ 13
The World Wide Web (WWW): ......................................................................... What is the WWW ........................................................................................... How Does the WWW Work ......................................................................... How Does the Browser Fetch the Pages ................................................ How Does the Browser Display the Pages. Who is Making the Web Standards .......................................................... THE HISTORY OF WWW. .................................................................................... HOW A WEB PAGE WORKS. .............................................................................. What Is a Website. THE HTML (How it works) .................................................................................. The Process of Web Design ............................................................................... Step 1: Planning ............................................................................................ Step 2: Content Building ............................................................................ Step 3: Design ............................................................................................... Step 4: Development. Failing Designs ............................................................................................... Introduction to HTML ........................................................................................... The HTML Skeleton ............................................................................................... HTML Editors ........................................................................................................... Making Your First Web Page ............................................................................. HTML Elements ....................................................................................................... Basic HTML Tags .................................................................................................... Headings ............................................................................................................... Paragraphs ........................................................................................................... Line Breaks .......................................................................................................... 34
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.................................................................................................. Comments in HTML .......................................................................................... Recap on HTML Elements ............................................................................... HTML Attributes ..................................................................................................... HTML Tag Attributes. 36

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3 Use Lowercase Attributes ............................................................................... Always Quote Attribute Values .................................................................... Text Alignments ..................................................................................................... HTML Text Formatting ......................................................................................... FONT Tag Good or Bad ................................................................................... The HTML Tag ..................................................................................... How to View HTML Source ................................................................................. HTML Character Entities ..................................................................................... Character Entities .............................................................................................. 42
Non-breaking Space ......................................................................................... 42
The Most Common Character Entities: ................................................. HTML Links ................................................................................................................ The Anchor Tag and the Href Attribute .................................................... The Target Attribute ......................................................................................... HTML Lists ................................................................................................................ 46
Unordered Lists .................................................................................................. Numbered Lists .................................................................................................. Definition Lists .................................................................................................... List Tags ............................................................................................................ HTML Images .......................................................................................................... Attributes .............................................................................................................. HTML Backgrounds ............................................................................................... 52
Bgcolor ................................................................................................................... Background .......................................................................................................... HTML Colors. Color Values ........................................................................................................ WC Standard Color Names ......................................................................... 54
Cross-browser Color Names. 54
Cross-browser Color Values .......................................................................... HTML Color Names ............................................................................................... HTML Forms and Input ........................................................................................ 60