How to learn English? Lectures of English Learning.
Discovering Computers
A Gateway to information
Chapter No.2
The Internet and World Wide Web
The Internet and World Wide Web
Discovering computers
A Gateway to Information
The Internet and World Wide Web
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The Internet and World Wide Web |
Objectives The history of the Internet. Describe the types of websites. Explain how to access and connect to the Internet. Recognize how web pages use graphics, animation, audio, video, virtual reality and plugins. Analyze an IP address. Identify the components of a web address. Explain the purpose of a web browser. Search for information on the web. Describe the types of e-commerce. Explain how email, FTP, newsgroups and message boards, mailing lists, chat rooms and instant messaging work. Identify the rules of netiquette. Identify the steps and tools required for web publishing. |
The Internet
What are some services found on the Internet?
1. Email 2. Web 3. File transfer.
4. Chat 5. Message Board 6. Instant Messaging.
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What are some services found on the Internet?
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History of the Internet
How did the Internet originate?
Arpanet
Networking project by Pentagon's Advanced REsearch Projects Agency (ARPA)
Goal
To allow scientists at different locations to share information. To function if part of network were disabled. Became functional September 1969.
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How did the Internet originate? Arpanet: Networking project by Pentagon's Advanced REsearch Projects Agency (ARPA)Goal: To allow scientists at different locations to share information. To function if part of network were disabled. Became functional September 1969. |
History of the Internet
How has the Internet grown? Today more than 150 million host nodes. 1984 more than 1000 host nodes. 1969 four host nodes.
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History of the Internet. How has the Internet grown? Today more than 150 million host nodes. 1984 more than 1000 host nodes. 1969 four host nodes. |
History of the Internet.
Who controls the Internet?
No one its is a public, cooperative and independent network. Several organizations set standards.
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History of the Internet. Who controls the Internet? No one its is a public, cooperative and independent network. Several organizations set standards.
How the Internet Works?
How can you connect to the Internet?
Slow speed technology. High speed connection.
Dial-up access modem in your computer uses a standard telephone line to connect to the Internet.
Connection must be established each time you log on. Slow but inexpensive.
Digital subscriber line (DSL), cable telephone Internet services (CATV),
cable modem provide connections using regular copper telephone lines. Connection is always on whenever the computer is running.
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How can you connect to the Internet? Slow speed technology. High speed connection. Dial-up access modem in your computer uses a standard telephone line to connect to the Internet. Connection must be established each time you log on. Slow but inexpensive. Digital subscriber line (DSL), cable telephone Internet services (CATV), cable modem provide connections using regular copper telephone lines. Connection is always on whenever the computer is running. |
How the Internet Works
What are ways to access the Internet?
ISP, Regional or National
OSP (AOL and MSN, for example)
Wireless Internet Service Provide
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How the Internet Works. What are ways to access the Internet? ISP, Regional or National. OSP (AOL and MSN, for example). Wireless Internet Service Provide |
How the Internet Works?
How might data travel the Internet using a telephone line connection?
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How the Internet Works? How might data travel the Internet using a telephone line connection? |
How the Internet Works?
What is a domain name?
Text version of Internet protocol (IP) address
Number that uniquely identifies each computer or device connected to Internet.
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How the Internet Works? What is a domain name? Text version of Internet protocol (IP) address Number that uniquely identifies each computer or device connected to Internet. |
The World Wide Web.
What is the World Wide Web (WWW)?
A worldwide collection of electronic documents also called the web. Each electronic document is called a web page. Can contain text, graphics, sound, video and built-in connections. A website is a collection of related web pages.
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The World Wide Web. What is the World Wide Web (WWW)?
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The World Wide Web
What is a Web Browser?
Program that allows you to view web pages.
Microsoft Internet Explorer.
Netscape.
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The World Wide Web. What is a Web Browser? Program that allows you to view web pages. Microsoft Internet Explorer. Netscape. |
The World Wide Web.
How can you establish a connection and start the web browser?
Step 1: Click the web browser. program name.
Step 2: If necessary, connect to the Internet.
Step 3: Connection to the Internet occurs, and a home page displays.
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The World Wide Web. How can you establish a connection and start the web browser? Step 2: If necessary, connect to the Internet. Step 3: Connection to the Internet occurs, and a home page displays. Step 1: Click the web browser. program name. |
The World Wide Web
What is a home page?
The first page that a website presents as Home Page.
Often provides connections to other web pages.
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The World Wide Web. What is a home page?
The first page that a website presents as Home Page.
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The World Wide Web
How do handheld computers and cellular telephones access the web.
Use a micro browser that displays web pages that contain mostly text.
Must be web enabled.
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The World Wide Web. How do handheld computers and cellular telephones access the web.
Use a micro browser that displays web pages that contain mostly text.
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The World Wide Web.
What is downloading?
The process of a computer receiving information. Depending upon connection speed, downloading can take from a few seconds to several minutes.
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The World Wide Web. What is downloading? The process of a computer receiving information. Depending upon connection speed, downloading can take from a few seconds to several minutes. |
The World Wide Web.
What is a URL?
Unique address for a web page.
a web server delivers the web page to your computer.
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The World Wide Web. What is a URL? Unique address for a web page. a web server delivers the web page to your computer. |
The World Wide Web
What is a Hyper Link (link)?
Built-in connection to another related web page location. Item found elsewhere on same web page. Different web page at same website. Web page at a different website.
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The World Wide Web. What is a Hyper Link (link)? Built-in connection to another related web page location. Item found elsewhere on same web page. Different web page at same website. Web page at a different website. |
The World Wide Web.
How can you recognize links?
Pointer changes to a small hand when you point to a link.
A link can be text or an image.
Text links are usually underlined and in a different color.
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The World Wide Web. How can you recognize links? Pointer changes to a small hand when you point to a link. A link can be text or an image. Text links are usually underlined and in a different color. |
The World Wide Web.
What is a search engine?
Program used to find websites and web pages by entering words or phrases called search text.
Also called a keyword.
Widely Used Search Engines.
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The World Wide Web. What is a search engine? Program used to find websites and web pages by entering words or phrases called search text. Also called a keyword. Widely Used Search Engines. |
The World Wide Web.
What is a hit?
Any website name that is listed as the result of a search.
Step 1: Go to search engine.
Step 2: Select type of search your want to run.
Step 3: View hits.
Step 4: Click link to view website.
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The World Wide Web. What is a hit? Any website name that is listed as the result of a search. Step 1: Go to search engine. Step 2: Select type of search your want to run. Step 3: View hits. Step 4: Click link to view website. |
The World Wide Web.
What is a subject directory?
Search tool with organized set of topics and subtopics.
Lets you find information by clicking links rather than entering keywords.
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The World Wide Web. What is a subject directory? Search tool with organized set of topics and subtopics. Lets you find information by clicking links rather than entering keywords. |
The World Wide Web.
What are the eight basic types of websites?
- Portal.
- News.
- Informational.
- Business/Marketing.
- Educational.
- Entertainment.
- Advocacy.
- Personal.
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The World Wide Web. What are the eight basic types of websites? Portal. News. Informational. Business/Marketing. Educational. Entertainment. Advocacy. Personal. |
The World Wide Web.
What is a portal?
A website that offers a variety of services from one, convenient location, usually for free.
Searching, sports, email, news, weather, auctions, web communities (websites that join people with similar interest).
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The World Wide Web. What is a portal? A website that offers a variety of services from one, convenient location, usually for free. Searching, sports, email, news, weather, auctions, web communities (websites that join people with similar interest). |
The World Wide Web.
What is a news website.
Contains newsworthy material.
Stories and articles relating to current events, life, money, sports, and weather.
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The World Wide Web. What is a news website. Contains newsworthy material. Stories and articles relating to current events, life, money, sports, and weather. |
The World Wide Web.
What is an informational website?
Contains factual information.
Created by organizations and government agencies.
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The World Wide Web. What is an informational website? Contains factual information. Created by organizations and government agencies. |
The World Wide Web.
What is a business/marketing website?
Contains content that promotes products.
Allows you to purchase products or services online.
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The World Wide Web. What is a business/marketing website? Contains content that promotes products. Allows you to purchase products or services online. |
The World Wide Web.
What is an educational website?
Offers avenues for formal and informal teaching and learning.
Some companies offer online training for employees.
Some colleges offer online classes and degrees.
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The World Wide Web.
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The World Wide Web.
What is an entertainment website?
Offers an interactive environment featuring music, video, sports, games, and more.
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The World Wide Web.
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The World Wide Web.
What is an advocacy website?
Contains content that describes a cause, opinion, or idea.
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The World Wide Web. What is an advocacy website? Contains content that describes a cause, opinion, or idea. |
The World Wide Web.
What is a personal website?
Web page maintained by private individual.
Reasons: sharing life experience with the world or job hunting.
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The World Wide Web.
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The World Wide Web.
What is multimedia?
Application integrating text with other media elements.
- Graphics
- Animation
- Audio
- Video
- Virtual Reality
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The World Wide Web.
What graphics formats are used on the Web?
- BMP
- JPEG
- PNG
- GIF
- PCX
- TIFF
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The World Wide Web.
What is a thumbnail?
Small version of a larger graphic image used to improve web page display time. Usually click on thumbnail to display larger image.
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The World Wide Web. What is a thumbnail? Small version of a larger graphic image used to improve web page display time. Usually click on thumbnail to display larger image. |
The World Wide Web.
What is animation?
Appearance of motion created by displaying a series of still images in sequence.
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The World Wide Web. What is animation? Appearance of motion created by displaying a series of still images in sequence. |
The World Wide Web.
What is audio?
Music, speech, or any other sound.
Individual compressed sound files that you download from the web to your computer.
Common web audio file formats are MP3, WAV, WMA (Windows Media Audio), MPEG, Real Audio, and Quick Time).
Once downloaded, you can play (listen to) the contents of the files.
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The World Wide Web. What is audio? Individual compressed sound files that you download from the web to your computer. Common web audio file formats are MP3, WAV, WMA (Windows Media Audio), MPEG, Real Audio, and Quick Time). Once downloaded, you can play (listen to) the contents of the files. Music, speech, or any other sound. |
The World Wide Web
What is streaming audio?
Transfers data in a continuous and even flow.
Enables you to listen to the sound as it downloads to your computer.
Radio stations use streaming audio to Broadcast over the web.
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The World Wide Web. What is streaming audio? Enables you to listen to the sound as it downloads to your computer. Radio stations use streaming audio to Broadcast over the web. Transfers data in a continuous and even flow. |
The World Wide Web.
What is video?
Consists of full motion images with sound played back at various speeds.
MPEG (Moving Pictures Experts Group) is popular video compression standard.
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The World Wide Web. What is video? Consists of full motion images with sound played back at various speeds.
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The World Wide Web.
What is virtual reality (VR)?
Use of computers to simulate real or imagined environment.
Appears as a three dimensional (3-D) space.
Used for games and many practical applications.
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The World Wide Web.
What are plugins?
Programs that extend the capability of a browser.
You can download many plugins at no cost from various websites.
Popular Plugin applications
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The World Wide Web. What are plugins? You can download many plugins at no cost from various websites. Popular Plugin applications. Programs that extend the capability of a browser. |
Electronic Commerce
What is e-commerce?
Short for electronic commerce.
Business transaction that occurs over the Internet.
Business to consumer (B2C) Sale of goods to general public.
Consumer to consumer (C2C) One consumer sells directly to another.
Business to business (B2B) Business providing goods and services to other businesses.
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Electronic Commerce. What is e-commerce? Business transaction that occurs over the Internet. Business to consumer (B2C) Sale of goods to general public. Consumer to consumer (C2C) One consumer sells directly to another. Business to business (B2B) Business providing goods and services to other businesses. Short for electronic commerce. |
Other Internet Services
What is E-mail?
Short for electronic mail.
The transmission of messages and files via a computer network. Messages can consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips. Internet access providers usually provide an email program. Some websites such as MSN Hotmail and Yahoo and Gmail provide free email services. One of the original services on the Internet.
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Other Internet Services. What is E-mail? The transmission of messages and files via a computer network. Messages can consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips. Internet access providers usually provide an email program. Some websites such as MSN Hotmail and Yahoo and Gmail provide free email services. One of the original services on the Internet. Short for electronic mail. |
Other Internet Services
How do you send an email message?
Step 1: Start an email program (Microsoft outlook, for example).Step 2: Click the New Mail Message button.
Step 3: Enter the recipient's email address, the subject, and the message.
Step 4: Click the Insert file button if you want to attach a picture, for example and click send.
Step 5: The recipient opens the message.
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Other Internet Services
What is an email address?
Unique name that consists of a user name and domain name that identifies the user.
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Other Internet Services. What is an email address? Unique name that consists of a user name and domain name that identifies the user. |
Other Internet Services.
How does an email message travel?
Step 1: Using email software, you create and send message.Step 2: Your software contacts software on your ISP's outgoing mail server.
Step 3: Software on outgoing mail server determines best route for data and sends message which travels along Internet routers to recipient's incoming main server.
Step 4: When recipient uses email software to check for email messages, the message transfers from incoming mail server to recipient's computer.
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Other Internet Services.
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Other Internet Services
What is FTP?
File transfer protocol
Internet standard that allows you to upload and download files with other computers on the Internet.
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Other Internet Services. What is FTP? Internet standard that allows you to upload and download files with other computers on the Internet. File transfer protocol . |
Other Internet Services
What are newsgroups and message boards?
Newsgroup:
Online area where users discuss a particular subject.Message board:
Type of discussion group.
Many websites use message boards because they are easier to use. |
Other Internet Services
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Other Internet Services
What is a mailing list?
Group of email addresses given a single name.When a message is sent to the mailing list, everyone on the list receives the message.
To add your name to a mailing you must subscribe to it; to remove your name you must unsubscribe.
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Other Internet Services
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Other Internet Services.
What is a chat?
Real time typed conversation that takes place on a computer.
Chat room is location on server that permits users to discuss topics of interest.
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Other Internet Services.
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Other Internet Services.
What is instant messaging (IM)?
A real time Internet communications service that notifies you when one or more people are onlien and allows you to exchange messages or files.Step 1: Login to the IM server.
Step 2: The server determines if any of your established friends, family, or coworkers, called buddies, are online.
Step 3: You send instant messages to an online buddy.
Step 4: Your Instant message travels through a messaging sever and then to the online buddy.
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Other Internet Services.
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Netiquette
What is netiquette?
Code of acceptable behaviors users should follow while on the Internet.
Golden Rule:
Treat others as you would like them to treat you.
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Netiquette
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Web Publishing.
What is web publishing?
Development and maintenance of web pages.
Step 1: Plan the website.
Step 2: Analyze and design the website.Step 3: Create the website.
Step 4: Deploy the website.
Step 5: Maintain the website.
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Summary of the Internet and World Wide Web
History of the Internet.
How to access and connect to the Internet.
The World Wide Web.
Other Internet services.
Netiquette.
Electronic commerce.
Web publishing.
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Summary of the Internet and World Wide Web. History of the Internet. The World Wide Web. Other Internet services. Netiquette. Electronic commerce. Web publishing. How to access and connect to the Internet. |
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