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Our Digital World Chapter 2 The Internet: Gateway to a World of Resources © Paradigm Publishing, Inc.1
This chapter will help you understand: How the Internet and Web have changed the ways people interact with each other. Services, equipment, and software used to connect and browse the Internet. Browsing and searching online. Evaluating the accuracy of the content you find. Intellectual property and copyright laws. Various Internet services and applications. © Paradigm Publishing, Inc.2
Main Topics 2.1 The World Goes Online 2.2 What Are the Internet and Worldwide Web? 2.2 What Are the Internet and Worldwide Web? 2.3 Joining the Digital World 2.4 Navigating and Searching the Web 2.5 The Vast Sea of Online Content 2.6 E-Commerce 2.7 Connecting in Cyberspace © Paradigm Publishing, Inc.3
Why Should You Care? 49% of public used the Internet to track the 2009 outbreak of H1N1 (swine) flu.* 55% of adults went online to follow the 2008 U.S. presidential campaign.** 80% of students surveyed “anticipate running into new technology they will have to adapt to and learn upon entering the workforce.” *(Pew Internet & American Life Project) **(Study by IBM) © Paradigm Publishing, Inc.4
2.1 The World Goes Online © Paradigm Publishing, Inc.5
What the Internet Makes Possible Today Scientists share expensive equipment online. Doctors and pilots learn by using computer simulations. iPhones as boarding passes. © Paradigm Publishing, Inc.6
What Does the Future Hold? The Internet in space as astronauts begin to Tweet. Collaborative s with rich multimedia content. Nanorobots transmitting data from within your body. © Paradigm Publishing, Inc.7
2.2 What Are the Internet and the Worldwide Web? © Paradigm Publishing, Inc.8
What Is the Internet? The physical infrastructure that allows us to connect and store content. © Paradigm Publishing, Inc.9
The Infrastructure of the Internet © Paradigm Publishing, Inc.10
What Is the Web? A system of content that resides on Internet servers. Web 2.0 involves interaction of users with content. Web 3.0 (Semantic Web) involves integrating data from various sources in a meaningful way. © Paradigm Publishing, Inc.11
Computers in Your Career One development of Web 3.0 is Travel 3.0 intelligent agents. Agents search across multiple sites to gather travel information more efficiently. They “read” travel reviews to craft an itinerary. They “understand” consumer preferences and search accordingly. © Paradigm Publishing, Inc.12
Use care when sharing personal information online. You wouldn’t shout your home address and social security number from a street corner. Why would you post it online for the world to read? © Paradigm Publishing, Inc. Playing It Safe 13
Web-enabled Careers Not all jobs involving the Internet are high-tech. – Web content writer/provider – Internet law expert – online trainer A variety of developer jobs include: – programming an e-commerce shopping cart – creating environments in virtual reality worlds © Paradigm Publishing, Inc.14
Internet Web (World Wide Web or WWW) web page website Web 2.0 Web 3.0 Semantic Web © Paradigm Publishing, Inc. Terms to know 15
Ask Yourself… While the Internet is the infrastructure on which content is delivered, the Web is a.what makes possible. b.a system of content. c.a set of servers that host online content. d.a system of sites. © Paradigm Publishing, Inc.16
2.3 Joining the Digital World © Paradigm Publishing, Inc.17
Worldwide Internet Use © Paradigm Publishing, Inc.18
Getting Online Types of Internet broadband connections include: – DSL – Cable – Satellite Hardware to connect. Wired or wireless connections. © Paradigm Publishing, Inc.19
Connecting to the Internet © Paradigm Publishing, Inc.20
Internet Service Providers An Internet Service Provider (ISP) allows you to access the Internet. ISPs include phone companies, cable and satellite companies, and local providers. © Paradigm Publishing, Inc.21
Browsers Used to navigate online content. Translate content. Display text, graphics, and multimedia content. Examples include Mozilla Firefox, Internet Explorer, Google Chrome, and Safari. © Paradigm Publishing, Inc.22
Browser Features: Mozilla Firefox © Paradigm Publishing, Inc.23
Terms to Know Internet Service Provider (ISP) browser download upload © Paradigm Publishing, Inc.24
Ask Yourself… What are three kinds of broadband connection? a.DSL, cable, and satellite b.DSL, mobile, and dial-up c.fiber-optic, DSL modem, and WiMax d.ISP, Wi-Fi, and router © Paradigm Publishing, Inc.25
2.4 Navigating and Searching the Web © Paradigm Publishing, Inc.26
Getting around the Internet Internet Protocol (IP): series of numbers that uniquely identifies an Internet location. Uniform Resource Locator (URL): text address entered in a browser to go to a website. URL is cross-referenced to an IP address. © Paradigm Publishing, Inc.27
Parts of a URL © Paradigm Publishing, Inc.28
Navigating among Web Pages Hyperlinks identify a Web destination. Hyperlinks can be embedded in any graphical object or text. © Paradigm Publishing, Inc.29
Parts of a Web Page © Paradigm Publishing, Inc.30
Search Engines Search engines are websites in which you enter search terms (keywords) to find Web content. Examples: Google, Yahoo!, Ask, or Bing. Search directories catalog results. Metasearch engines search across various sites at the same time. © Paradigm Publishing, Inc.31
Search Tips Understand keywords and keyword phrases. Learn to narrow your search for better results. Exclude certain results. Use specialized search engines. © Paradigm Publishing, Inc.32
Most people don’t realize how much information about them exists online. ─Resume ─Blog entries on a publicly viewable page ─Schools, employers, friends, or the government placed your information online Do a web search of your name to see what’s online about you. © Paradigm Publishing, Inc. Playing It Safe 33
Plug-ins and Players Some websites may require a plug-in or player to display content. Plug-ins and players are free. © Paradigm Publishing, Inc.34
Plug-ins and Players © Paradigm Publishing, Inc.35 NamePurpose Adobe ReaderRead and print PDF files Adobe Flash PlayerPlay animations QuicktimePlay MP3 music, animations, and video files RealPlayerPlay streaming audio and video files ShockwavePlay interactive games and various multimedia files online Windows Media PlayerPlay streaming audio, video, animations and multimedia presentations on the Web
Playing It Safe Download plug-ins and players from the source. Avoid spyware. © Paradigm Publishing, Inc.36
Terms to Know Internet protocol (IP) uniform resource locator (URL) web address domain name top-level domain (TLD) hyperlink hypertext home page search engine search directory keywords metasearch engine plug-in player streaming video © Paradigm Publishing, Inc.37
Ask Yourself… Search engines search for content. What do search directories also do? a.download results to your hard drive b.provide a catalog of sites by topic c.sort results alphabetically d.only deliver the top ten results © Paradigm Publishing, Inc.38
2.5 The Vast Sea of Online Content © Paradigm Publishing, Inc.39
Judging the Quality of Online Content Who, what, when? – Who published the content? – What is the quality of the content? – When was it published? © Paradigm Publishing, Inc.40
The Three W’s of Online Content © Paradigm Publishing, Inc.41
Copyright and Intellectual Property It’s illegal to copy intellectual or copyrighted property. Ease of copying and pasting content online leads to violations. Peer-to-peer file sharing issues. Digital Millennium Copyright Act. © Paradigm Publishing, Inc.42
The Invisible Web Invisible Web (Deep Web) includes hidden or uncataloged databases. Most search engines can’t find this content. © Paradigm Publishing, Inc.43
Online research resources: online encyclopedias, survey results, online professional journals. Many careers rely on using the Internet for research: – Librarians – Government policy analysts – Economists – Insurance risk analysts – Human resource workers – Purchasing agents, and others © Paradigm Publishing, Inc. Research Computers in Your Career 44
copyright intellectual property peer-to-peer (P2P) file sharing deep Web invisible Web crawler data integration © Paradigm Publishing, Inc. Terms to Know 45
Ask Yourself… What makes copyright infringement so easy online? a.the ease with which you can copy and paste content b.the lack of copyright laws c.the lack of an online police force d.None of the above © Paradigm Publishing, Inc.46
2.6 E-Commerce © Paradigm Publishing, Inc.47
What Is E-commerce? Buying, selling, or bidding online. Three kinds: – Business-to-Business (B2B) – Business-to-Consumer (B2C) – Consumer-to-Consumer (C2C) © Paradigm Publishing, Inc.48
The B2C E-commerce Process © Paradigm Publishing, Inc.49
© Paradigm Publishing, Inc. Classified and Auction Sites Never pay by check or debit card. Never let the buyer come to your home. Playing It Safe 50
E-commerce Online entrepreneurs start their own eBay store or website. Affiliates or associates get a small fee for sending online browsers to a partner site. Supplement regular job or as a main source of income. © Paradigm Publishing, Inc.51
The Future of Online Advertising What would be the consequence of the collapse of the Internet’s advertising business model? Would Internet users be willing to pay for content that had been free? What are the best ways to make money from content, aside from advertising? © Paradigm Publishing, Inc.52
e-commerce business-to-business (B2B) e-commerce business-to-consumer (B2C) e-commerce consumer-to-consumer (C2C) e-commerce © Paradigm Publishing, Inc. Terms to Know 53
Ask Yourself… Which is an example of a C2C e-commerce site? a.Amazon b.Microsoft c.Craig’s List d.U.S. Steel © Paradigm Publishing, Inc.54
2.7 Connecting in Cyberspace © Paradigm Publishing, Inc.55
Ways to Connect Online to send and receive messages and attached files. Voice-over Internet Protocol (VoIP) to make phone calls over the Internet. Web conferencing to hold meetings and collaborate online. © Paradigm Publishing, Inc.56
can deliver viruses to your computer. Phishing involves that delivers financial scams. © Paradigm Publishing, Inc. Playing It Safe 57
program client address Voice-over Internet Protocol (VoIP) web conferencing Multipurpose Internet Mail Extensions (MIME) format Simple Mail Transfer Protocol (SMTP) Internet Message Access Protocol (IMAP) Post Office Protocol, Version 3 (POP3) © Paradigm Publishing, Inc. Terms to Know 58
Ask Yourself… When was the first sent? a.1985 b.1990 c.1961 d.1971 © Paradigm Publishing, Inc.59
Our Digital World © Paradigm Publishing, Inc.60
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