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The Internet and the World Wide Web, Chapter 2. ITSC 1401 Intro to Computers Instructor: Glenda H. Easter. Learning Objectives. Discussion of the following items: Background of E-Mail The parts of an e-mail message. Description Information Superhighway Uses of the Internet.

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The internet and the world wide web chapter 2

The Internet and theWorld Wide Web, Chapter 2

ITSC 1401 Intro to Computers

Instructor:

Glenda H. Easter


Learning objectives

Learning Objectives

Discussion of the following items:

  • Background of E-Mail

  • The parts of an e-mail message.

  • Description

  • Information Superhighway

  • Uses of the Internet

The Internet and the World Wide Web, Chp. 2B


Learning objectives continued

Learning Objectives (Continued)

Discussion of the following items:

  • Internet Limitations

  • Common WWW Terms

  • Hypertext

  • Web Browsers

  • Popular Search Engines

  • Web Page vs. Web Site

The Internet and the World Wide Web, Chp. 2B


The internet

The Internet

  • What Is It?

  • Who Owns It?

  • Who Funds It?

NII

The Internet and the World Wide Web, Chp. 2B


E mail

E-Mail

  • In 1970, e-mail became popular.

  • E-Mail is a way of sending electronic messages between computers.

  • E-Mail messages can contain text, graphics, images, and sound.Do you have mail?

The Internet and the World Wide Web, Chp. 2B


Basic elements of an e mail

Basic Elements of an E-Mail

  • There are three parts of an e-mail. A header which has three parts The message (the actual text of the message).  The signature (this is additional information about the sender).

The Internet and the World Wide Web, Chp. 2B


Parts of the header

Parts of the Header

  • The header has three parts: To Line (e-mail address of person receiving the e-mail). Subject Line (an on-line description of the subject). Attachment Line (This is a filename or graphic indicating that a message is included.)

The Internet and the World Wide Web, Chp. 2B


The internet1

The Internet

  • The Internet is like a giant highway that connects millions of people and organizations.

  • It has created a cooperative society that forms a virtual community.

The Internet and the World Wide Web, Chp. 2B


E mail1

E-Mail

  • In 1970, e-mail became popular.

  • E-Mail is a way of sending electronic messages between computers.

  • E-Mail messages can contain text, graphics, images, and sound.Do you have mail?

The Internet and the World Wide Web, Chp. 2B


Basic elements of an e mail1

Basic Elements of an E-Mail

  • There are three parts of an e-mail. A header which has three parts The message (the actual text of the message).  The signature (this is additional information about the sender).

The Internet and the World Wide Web, Chp. 2B


Parts of the header1

Parts of the Header

  • The header has three parts: To Line (e-mail address of person receiving the e-mail). Subject Line (an on-line description of the subject). Attachment Line (This is a filename or graphic indicating that a message is included.)

The Internet and the World Wide Web, Chp. 2B


Web browser

Web Browser

  • The software that allows you to go from one resource to another by following hyperlinks is known as a Web Browser.

  • Of those previously mentioned browsers, all are graphical browsers with the exception of Lynx.

  • Lynx is a non-graphical browser.Lynx can retrieve documents that contain graphics, but just ignore the graphics and display only the text.

The Internet and the World Wide Web, Chp. 2B


Connect to the internet

Connect to the Internet

  • LAN Connection

  • Modem Connection

  • High-Speed Data Links

The Internet and the World Wide Web, Chp. 2B


E mail2

E-Mail

  • In 1970, e-mail became popular.

  • E-Mail is a way of sending electronic messages between computers.

  • E-Mail messages can contain text, graphics, images, and sound.Do you have mail?

The Internet and the World Wide Web, Chp. 2B


Basic elements of an e mail2

Basic Elements of an E-Mail

  • There are three parts of an e-mail. A header which has three parts The message (the actual text of the message).  The signature (this is additional information about the sender).

The Internet and the World Wide Web, Chp. 2B


Parts of the header2

Parts of the Header

  • The header has three parts: To Line (e-mail address of person receiving the e-mail). Subject Line (an on-line description of the subject). Attachment Line (This is a filename or graphic indicating that a message is included.)

The Internet and the World Wide Web, Chp. 2B


Web browser1

Web Browser

  • The software that allows you to go from one resource to another by following hyperlinks is known as a Web Browser.

  • Of those previously mentioned browsers, all are graphical browsers with the exception of Lynx.

  • Lynx is a non-graphical browser.Lynx can retrieve documents that contain graphics, but just ignore the graphics and display only the text.

The Internet and the World Wide Web, Chp. 2B


Connect to the internet1

Connect to the Internet

  • LAN Connection

  • Modem Connection

  • High-Speed Data Links

The Internet and the World Wide Web, Chp. 2B


Now what did you say the internet is

Now What Did You Say the Internet Is?

  • The Internet is sometimes called the Information Superhighway.

    • Just as a road allows travel through different areas of a country, the Internet allows information to flow through many different interconnected computer networks..

The Internet and the World Wide Web, Chp. 2B


Now what did you say the internet is continued

Now What Did You Say the Internet Is? (Continued)

  • The Internet is simply a lot of computers connected to one another.

    • The Internet consists of millions of large computers that in turn connect tens of millions of participants with each other.

    • The Internet is also the home of a staggering amount of information and a large number of different services.

The Internet and the World Wide Web, Chp. 2B


Today s information highway the internet

Today’s Information HighwayThe Internet

  • An Information Highway

  • TCP/IP (Internet Protocols)

    • Packet Switching Network

  • Direct Access

    • Dialup IP

    • LAN

dialup access

The Internet and the World Wide Web, Chp. 2B


About the internet

About the Internet

  • The Internet has a set of rules for connecting networks.

  • The Internet began in 1969 when government and military agencies developed ARPANET (Advanced Research Project Agency Network) to share and communicate computer resources with researchers working on national security projects.

The Internet and the World Wide Web, Chp. 2B


Browsing the web

Browsing the Web

  • Default start page

  • Accessing web pages

    • click a hyperlink

    • type a URL in the address or location box

    • click a button on the links toolbar

hyperlink

The Internet and the World Wide Web, Chp. 2B


Default start page

Default Start Page

  • To set the default start page:

  • Select preferences from the Edit menu.

The Internet and the World Wide Web, Chp. 2B


Returning to a previous site

Returning to a Previous Site

  • Bookmarks Lists

    • Add

    • Edit

    • Individual links

    • Folders

    • Preset Links

The Internet and the World Wide Web, Chp. 2B


Returning to a previous site continued

Returning to a Previous Site(Continued)

  • History List

    • Created Automatically

    • Visited Sites

    • Nine Days

    • Arranging

    • Searchable

The Internet and the World Wide Web, Chp. 2B


Returning to a previous site continued1

Returning to a Previous Site(Continued)

  • From desktop, right click on Netscape Explorer icon.

  • Highlight Properties

  • General

  • Temporary Internet Files

  • View files and view objects

The Internet and the World Wide Web, Chp. 2B


Returning to a previous site continued2

Returning to a Previous Site(Continued)

Go Menu keeps track of all links accessed

The Internet and the World Wide Web, Chp. 2B


Web browsers

Web Browsers

  • Netscape

  • Internet Explorer

  • Lynx

  • Mosaic

The Internet and the World Wide Web, Chp. 2B


Web browser2

Web Browser

  • The software that allows you to go from one resource to another by following hyperlinks is known as a Web Browser.

  • Of those previously mentioned browsers, all are graphical browsers with the exception of Lynx.

  • Lynx is a non-graphical browser.Lynx can retrieve documents that contain graphics, but just ignore the graphics and display only the text.

The Internet and the World Wide Web, Chp. 2B


Network access

Network Access

  • You can access the Internet through an ISP (Internet Service Provider).

  • You can access your ISP through a modem which converts digital computer signals to telephone analog signals.

  • The Internet can also be accessed through a host computer (such as that used at El Centro and other colleges and universities.)

The Internet and the World Wide Web, Chp. 2B


Service providers and web page design

Service Providers and Web Page Design

  • Service Providers such as America Online have templates you fill in and save as your Web page. The user is allowed a limited amount of space on which to create a Web page. Some of those templates can be found by accessing the following: www.geocities.com www.tripod.com

The Internet and the World Wide Web, Chp. 2B


Web pages vs web sites

Web Pages vs. Web Sites

  • Web Pages

  • Web Sites

  • Home Pages

The Internet and the World Wide Web, Chp. 2B


Internet terms

Internet Terms

  • Hypertext - No beginning and no end.

  • Web - A group of documents connected by hyperlinks.

  • Web Browser - software that allows you to go from one document to another.

  • Web Page - a document you create to share with others.

  • Web Site - A group of related web pages.

The Internet and the World Wide Web, Chp. 2B


Hypertext markup language

Hypertext Markup Language

  • Documents sent by the server are written in HTML which stands for hypertext markup language.

  • The Web uses a writing technology called hypertext.

  • The order in which to read the document is determined by the author.

  • Hyperlinks or links pull multiple documents together with no fixed beginning nor ending.

The Internet and the World Wide Web, Chp. 2B


Hypertext

HyperText

  • The World Wide Web uses hypertext (the small hand that appears under a link) which references and links to other documents.

The Internet and the World Wide Web, Chp. 2B


Hyperlinks

Hyperlinks

  • Provide text, graphics, sound or video links

  • Blue underlined fonts are unexplored

  • Magenta links have been previously accessed

www.microsoft.com

www.microsoft.com

The Internet and the World Wide Web, Chp. 2B


Hypertext links

Hypertext Links

  • Hypertext Links are called pages.

  • Pages may contain hypertext links to text files, graphic images, movies, audio, or video clips.

  • The WWW allows you to jump from one page to another in a non-sequential manner.

The Internet and the World Wide Web, Chp. 2B


The internet and the world wide web chapter 2

URL -- Uniform Resource Locator

http://www.annex.com/southwest/museum.htm

Document

Path (Directory or Folder)

Internet Address (Web site)

Means of access,

HyperText Transfer Protocol

The Internet and the World Wide Web, Chp. 2B


Parts of url uniform resource locator

Parts of URL Uniform Resource Locator

  • Protocol or vehicle

    • http, ftp, gopher, telenet (_________://), Location (such as Domain Name System)

    • host.organization.topleveldomain

    • http://www.rlc.dcccd.edu

  • Internet Address or Web Site

    • http://www.rlc.dcccd.edu/Human/ArtHP.htm

  • Directory, similar to DOS and Windows

    • /directory/subdirectory/subdirectory/file.ext

    • http://www.rlc.dcccd.edu/Human/ArtHP.htm

The Internet and the World Wide Web, Chp. 2B


Addresses for internet

Addresses for Internet

  • The Internet uses a method known as the domain name system (DNS) to assign addresses to people and computers. This system divides an address into three parts:- Domain Code(edu)- Domain Name(dcccd)- User Name(ghe5522)[email protected]

The Internet and the World Wide Web, Chp. 2B


Domain name system

Domain Name System

  • The Domain Name System (DNS) is an address that uses words rather than numbers. It is made up of two parts:An individual name (created for the individual user)

     Domain (a name for a computer connected to the Internet)

The Internet and the World Wide Web, Chp. 2B


Internet domain codes

Internet Domain Codes

  • .combusiness (commercial)

  • .edueducational

  • .govgovernment

  • .milmilitary

  • .netgateway or host

  • .orgother organization

The Internet and the World Wide Web, Chp. 2B


Research on the web

Research on the Web

  • Search Engines

  • Subject Directories (Web databases)

  • Yahoo

  • WWW Virtual Library

  • Alta Vista

  • Infoseek Guide

The Internet and the World Wide Web, Chp. 2B


Research on the web1

Research on the Web

  • There are two ways to find information on the Web. Searching Browsing

  • You search when you know exactly what you want.

  • You browse if you have an idea of what you want.

The Internet and the World Wide Web, Chp. 2B


Search engines

Search Engines

  • Search engines are accessed through Web browser software.

  • Each search engine has different searching options.

  • Search tools can be categorized as subject directories or Web databases.

  • Subject Directories classify subjects according to broad categories and multiple levels of subcategories. An example is Yahoo.

The Internet and the World Wide Web, Chp. 2B


Subject guides

Subject Guides

Yahoo! is one of the most extensive subject guides.

The Internet and the World Wide Web, Chp. 2B


Search engines1

Search Engines

Some leading search engines areAltaVista, Excite, and Infoseek .

The Internet and the World Wide Web, Chp. 2B


Using a search engine effectively

Using a Search Engine Effectively

NOT

  • Boolean Logic

    • Boolean Operators

  • Search Items

    • False Drops

    • Hits

    • Result Ranking

OR

AND

The Internet and the World Wide Web, Chp. 2B


Search techniques

Search Techniques

  • Inclusion operator (+)

    • +kittens +care + Siamese

  • Exclusion operator (-)

    • +kittens +care + Siamese -classified

  • Wildcards

    • -classified*

The Internet and the World Wide Web, Chp. 2B


Booleans

Booleans

  • Boolean logic allows you to combine search terms in different ways.

  • Boolean Operators: AND, OR, or NOT you can describe the logical relationship of two or more terms. AND - means that both terms must be present. OR - means that either term must be present. NOT - means that the term should not be present.

The Internet and the World Wide Web, Chp. 2B


Booleans1

Booleans

  • Boolean logic allows you to combine search terms in different ways.

  • Boolean Operators: AND, OR, or NOT you can describe the logical relationship of two or more terms.

The Internet and the World Wide Web, Chp. 2B


Terms associated with the world wide web

Terms Associated with the World Wide Web

  • Search items: Words that describe your search topics.

  • False drops: Items that are found in a search but are not what you want. Words with two different meanings often result in a false drop.

  • Hits: Returned items that match your search terms.

  • Result rankings: An attempt to put resources returned by the search in an order based on each resource’s relevance to your query.

The Internet and the World Wide Web, Chp. 2B


Search engines2

Search Engines

  • Search engines perform a systematic search on the Web for documents on a specific topic.

  • Use a keyword or words such as a query.

  • Several search engines are available

  • Each search engine has its own database

  • No single search engine is better than another.

  • Use Boolean (logical) operators

  • Returns hits or documents once search has been submitted.

The Internet and the World Wide Web, Chp. 2B


Popular web search engines

Popular Web Search Engines

  • SiteURL

  • http://www.altavista.digital.com

    http://www.infoseek.com

    http://www.lycos.com

The Internet and the World Wide Web, Chp. 2B


Popular web search engines continued

Popular Web Search Engines (Continued)

  • SiteURL

    http://webcrawler.com

    http://www.yahoo.com

The Internet and the World Wide Web, Chp. 2B


Using search button in netscape navigator

Using Search Button in Netscape Navigator

  • Offers a number of services, such as:

    • search engines

    • web guides

    • white pages

    • more for your choice

    • more when you scroll down.

The Internet and the World Wide Web, Chp. 2B


Using search button in netscape navigator1

Using Search Button in Netscape Navigator

  • You can perform keyword searches or use the search feature via category structure.

  • There is a message area on the bottom on your screen that informs you what percentage of your search has been performed.

The Internet and the World Wide Web, Chp. 2B


Find command

Find Command

  • Edit Menu

  • Find in Page

  • Find Again

  • Searches within a document

  • It is faster

  • It is convenient.

The Internet and the World Wide Web, Chp. 2B


Copying images into your web page

Copying Images into Your Web Page

  • Small Version

  • Save Image As . . .

    When you right click your

    mouse button, it allows

    you to save an image so that

    it can be inserted into other

    documents.

The Internet and the World Wide Web, Chp. 2B


Applications on the web

Applications on the Web

  • Some companies offer products and services on the Web.

  • A web site stores the program which is called Webware or a Web application.

  • To access these programs on the Web, you simply visit the Web site that offers the program.

  • Some Web sites provide access to the program for free.

The Internet and the World Wide Web, Chp. 2B


Support tools for the world wide web

Support Tools for the World Wide Web

  • Online help is replacing hardcopy user manuals.

  • Frequently help is context-sensitive meaning that the Help information is related to the current task being attempted.

  • FAQ (Frequently Asked Questions) is an application software to help you find answers to common questions.

The Internet and the World Wide Web, Chp. 2B


Application service providers

Application Service Providers

  • The application service provider is a third-party organization that manages and distributes software and services on the Web. Five categories have emerged:

    • Enterprise ASP

    • Local/Regional ASP

    • Specialist ASP

    • Vertical Market ASP

    • Volume Business ASP

The Internet and the World Wide Web, Chp. 2B


Support tools for the world wide web continued

Support Tools for the World Wide Web (Continued)

  • Tutorials are step-by-step instructions using real examples that show you how to use an application.

  • A Wizard is an automated assistant that helps you complete a task.

The Internet and the World Wide Web, Chp. 2B


Thank you for your attention

Thank you for your attention!!

  • Now you are on your way to a great start!!

The Internet and the World Wide Web, Chp. 2B


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