Introduction to Computers and Internet. CCS CMPTR Chapter 1 Part 3

Transcription

1 Introduction to Computers and Internet CCS CMPTR Chapter 1 Part 3

2 Lecture Shortcuts Internet Computers and Society Assignment 7 End of Chapter Questions Assignment 8 Vocabulary PDF Microsoft Word Lecture

3 Network Collection of computers and devices connected Allow users to share hardware, software, and data

4 Internet Hardware that connects a computer network linking smaller computer networks worldwide

5 What is the World Wide Web? Collection of web pages available on the Internet

6 Difference between Internet and World Wide Web (WWW) Internet WWW Hardware connected via networks Software (all connected web pages)

7 Internet Service Providers What: Company offers access to Internet for a fee Who: AT & T Frontier Verizon Sprint Selecting Type of device (phone vs. computer) Internet Connection (mobile, cable) Location (city, rural) Page 159 Exhibit 5-16

8 Accessing the Internet Connection Availability Speed Conventional Dial Up Cheap (Frontier) 56 Kbps is slow Cable Internet Access Fast (Charter Cable) 5-20 Mbps Digital Line Subscriber DSL Direct Connection (Frontier) Doesn t tie up phone line Fast 1-7 Mbps Satellite Clear view southern sky (Hughes) 5-20 Mbps Broadband over fiber Mobile Wireless Fiber Optic Fast Mobile phone network Speed depends on cell service Mbps 700 Kbps-1.7 Mbps

9 Web Site: collection of web pages belong to one company Web Server: stores web pages; continually connected to Internet Web browser: allows viewing of web pages. For example: Firefox, Internet Explorer, Google Chrome Web page: document on web server

10 Internet Address IP addresses Numeric addresses identifies a computer Google what is my IP address Hard to Remember So Domain names Text based address identifies a computer; corresponds to IP address (calhoun40.net)

11 Domain Name Example http is standard protocol identifier Calhoun.k12.il.us is the web server hosting the page Hs is the folder the high school page is in Index is the name of the high school page Exhibit 1-15

12 Domain Name Text based name corresponds with numeric IP address ( ) Domain name is registered Domain name parts are separated by a period Far right part of name is top level domain Identifies organization Edu for education, gov for government, com for business, jp for Japan, fr for France (P17)

13 Sample top-level domains (TLDs) Original TLDs Intended use.com Commercial businesses..edu Educational institutions.gov Government organizations.int International treaty organizations.mil Military organizations.net Network providers and ISPs.org Noncommercial organizations Newer TLDs Intended use.aero Aviation industry.biz Businesses.fr French businesses.info Resource sites.jobs Employment sites.mobi Sites optimized for mobile devices.name Individuals.pro Licensed professionals.uk United Kingdom businesses

14 What is URL? Uniform Resource Locator Address of web page Enter URL in address bar and web page displays Displayed page is main page or home page. First page viewed in organization s web site. Home page is displayed with top-level domain: calhoun40.net

15 What is surfing the web? Using web browser to view pages Firefox, Internet Explorer, Chrome Type URL into address bar of search engine to go to home page Use favorites to bookmark to keep the page

16 Computers and Society Positive Society Changes Cars, microwaves, toys, phones, bikes Processing banking transactions Exploring space Computers smaller, faster, smarter Provided technological advances in medicine, car design, online classes, speech recognition Negative Society Changes Unsolicited s, harmful programs, legal and ethical issues, Big brother data collection and personal privacy (CIPS can lower thermostat remotely) Stress to body What is done with data collected?

17 Intellectual Property Rights Legal rights to intellectual property Copyright exclusive right to publish, reproduce, distribute, perform or display work Remain in effect 70 years Not required to display copyright notice Must obtain permission to use Review examples on Page 23 #1-20 Trademark Work phrase or symbol identifying a service or company (M in McDonalds) Plagiarism Presenting someone else s work as your own Ethics Standards of moral conduct include telling the truth, not stealing songs by downloading, not copying several copies of a software, not using school printer for personal use, not cheating

18 Environmental Concerns Environmental friendly computer use Minimize use of power and paper Energy Star Labels Unplug devices to save vampire costs Disposal of electronics P27

19 Ergonomics Science of fitting a work environment to the people who work there Properly adjusting furniture to reduce strain Providing keyboards that reduce hand and wrist strain Providing document holders to limit turning of head Antiglare screens Wrist supports P26

20 Etrash Computer waste in land fill Toxic and hazardous materials 700 different chemicals in a desktop Arsenic, lead, mercury, cadmium Proper disposal is important

21 Ethics Standards of moral conduct Telling the truth Beliefs vary according to culture Personal ethics Apply to personal behavior Business ethics Behavior at work Computer ethics Ethical use of computer and Internet

22 Your turn: Explore Concepts 1. Define computer network 2. What is the difference between the Internet and the World Wide Web? 3. What is an Internet Service Provider? 4. What is a home page? 5. What is fastest way to access Internet? 6. What is difference between web site and web page? 7. What is difference between IP address and domain name? 8. What is a URL? 9. What has been a negative impact of the Internet on society? 10. What has been a positive impact of the Internet on society? 11. What is ergonomics? 12. What is etrash? 13. What is ethics? 14. What are intellectual property rights? 15. What is one environmental concern with computers? Answer questions using Word or One Drive Use MLA style Include a footer with document name Use a numbered list Common Core: RI.1, RI.3, RI.4, RI.10, W.4, W.5, W.6, L.1, L.4, L.6

23 Your Turn Vocabulary Assign 7 Internet vs. World Wide Web Web Site Web Page ISP IP address Domain name Web server Web browser URL Surfing the web Intellectual property rights Copyright Fair use Trademark Plagiarism Digital rights management software Digital watermarks Ethics Computer ethics Business ethics Repetitive stress injury Green computing Eco-label E-trash Go to and generate a PDF of flash cards for chapter vocabulary

24 Bibliography CMPTR by PINARD/ROMER pe=none&inps=true&prodid=vrl&usergroupname=ae88 e4180c29c2e8%3a- 7778da4f%3A12cd5004cf2%3A1bcd&resultListType=RES ULT_LIST&searchType=BasicSearchForm&contentSegment = &docId=GALE &i setoc=true&hidesrchreults=true#