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HIGHER COMPUTER NETWORKING

Lesson 6 Types of Browsers & WAP. HIGHER COMPUTER NETWORKING. Explanation of browser functions Wire less access to the Internet Description of WML pages. What You Should Know About Browsers. Browsers A browser is a program that interprets HTML code into a web page. They:.

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HIGHER COMPUTER NETWORKING

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  1. Lesson 6 Types of Browsers & WAP HIGHER COMPUTER NETWORKING Explanation of browser functions Wireless access to the Internet Description of WML pages McLean 2006

  2. What You Should Know About Browsers Browsers A browser is a program that interprets HTML code into a web page. They: • Store “favourites” and keep a “history” of sites visited • Cache images etc. on the hard disk (speeds up loading) • Can be extended by means of “plugins” such as Flash player HIGHER COMPUTER NETWORKING Microsoft Internet Explorer is common and so is Mozilla Firefox Microbrowsers A microbrowser is used to browse the Internet on a wireless handheld device e.g. a mobile phone or a PDA • Small file size to minimise memory / bandwidth overheads McLean 2006

  3. What You Should Know About WAP Wireless Application Protocol WAP is a set of protocols used to deliver the Internet to hand-held communications devices Web pages written in HTML and communicated via HTTP are not suitable for WAP because they are not optimised for low bandwidths. So WAP was developed. WAP allows hand-held devices to retrieve pages written in Wireless Mark-up Language (WML). HIGHER COMPUTER NETWORKING McLean 2006

  4. What You Should Know About WML Wireless Markup Language WML is similar to HTML except it lacks many of HTML’s features. It supports mostly text, has a limited number of styles and has limited support for graphic images and tables. A WML application consists of one or more decks containing collections of cards. A card is what the user sees on the small screen (like the page), the deck is all the pages together (like the site). HIGHER COMPUTER NETWORKING McLean 2006

  5. What You Should Know About WML WML Tags <WML> </WML> Start and end of a DECK <CARD> </CARD> Start and end of a CARD <HEAD> </HEAD> Start and end of a deck HEADING <p> </p> Start and end of a PARAGRAPH GO Links to a CARD PREV Links to a PREVIOUS CARD HIGHER COMPUTER NETWORKING Now complete the activity on scholar: McLean 2006

  6. What You Should Know About WML Activity 1 Now complete this activity on scholar: HIGHER COMPUTER NETWORKING Activity 2 Load Internet Explorer and connect to http://www.wapsilon.com/ Enter this WAP url: http://wap.google.com/wml Then View with the Nokia 7210 McLean 2006

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