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Chapter 01 - Introduction to Computers
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Chapter 01 - Introduction to Computers

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Basic introduction to computer literacy, terma, computer components, advantages and disadvantages of computers, networks, the Internet and World Wide Web, and different types of software and …

Basic introduction to computer literacy, terma, computer components, advantages and disadvantages of computers, networks, the Internet and World Wide Web, and different types of software and computers. And describe the role of each element of an information system.


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  • 1. Discovering Computers 2011 Living in a Digital World
  • 2. Objectives Overview Define the Explain why computer term, computer, and Describe the five literacy is vital to describe the components of asuccess in today’s world relationship between computer data and informationDiscuss the advantages Define theand disadvantages that term, network, and Discuss the uses of theusers experience when identify benefits of Internet and World working with sharing resources on a Wide Web computers networkSee Page 3 Discovering Computers 2011: Living in a Digital World 2for Detailed Objectives Chapter 1
  • 3. Objectives Overview Differentiate among types, sizes, andDistinguish between system software Describe the role of each element in an functions of computers in each and application software information system category Explain how home users, small Discuss how society uses computers in office/home office users, mobile education, finance, government, health users, power users, and enterprise care, science, publishing, travel, and users each interact with computers manufacturingSee Page 3 Discovering Computers 2011: Living in a Digital World 3for Detailed Objectives Chapter 1
  • 4. A World of Computers• Computers are everywherePages 4 - 5 Discovering Computers 2011: Living in a Digital World 4Figure 1-1 Chapter 1
  • 5. What Is a Computer?• A computer is an electronic device, operating under the control of instructions stored in its own memory Collects Produces data Processing information (input) (output) Information Processing CyclePage 6 Discovering Computers 2011: Living in a Digital World 5 Chapter 1
  • 6. What Is a Computer?Page 6 Discovering Computers 2011: Living in a Digital World 6Figure 1-2 Chapter 1
  • 7. The Components of a Computer• A computer contains many electric, electronic, and mechanical components known as hardware Input Device • Allows you to enter data and instructions into a computer Output Device • Hardware component that conveys information to one or more people • Case that contains the electronic components of the computer that System Unit are used to process data Storage Device • Holds data, instructions, and information for future use Communications • Enables a computer to send and receive data, instructions, and Device information to and from one or more computers or mobile devicesPages 6 - 8 Discovering Computers 2011: Living in a Digital World 7 Chapter 1
  • 8. The Components of a ComputerPage 7 Discovering Computers 2011: Living in a Digital World 8Figure 1-3 Chapter 1
  • 9. Advantages and Disadvantagesof Using Computers Advantages of Disadvantages of Using Computers Using Computers Speed Health Risks Reliability Violation of Privacy Consistency Public Safety Storage Impact on Labor Force Communications Impact on Environment Discovering Computers 2011: Living in a Digital WorldPages 9 - 10 9 Chapter 1
  • 10. Advantages and Disadvantagesof Using Computers• Green computing involves reducing the electricity consumed and environmental waste generated when using a computer• Strategies include: – Recycling – Regulating manufacturing processes – Extending the life of computers – Immediately donating or properly disposing of replaced computers Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Green Computing below Chapter 1Page 10 Discovering Computers 2011: Living in a Digital World 10 Chapter 1
  • 11. Networks and the Internet • A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission mediaPages 10 - 11 Discovering Computers 2011: Living in a Digital World 11 Chapter 1Figure 1-6
  • 12. Networks and the Internet• The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click The Internet below Chapter 1Page 11 Discovering Computers 2011: Living in a Digital World 12Figure 1-7 Chapter 1
  • 13. • What do people do on the Internet?• Let’s compile a list of our own. Discovering Computers 2011: Living in a Digital World 13 Chapter 1
  • 14. Networks and the Internet• People use the Internet for a variety of reasons: Communicate Research and Shop Bank and Invest Online Trading Access Information Entertainment Download Videos Share Information Web ApplicationPages 12 - 13 Discovering Computers 2011: Living in a Digital World 14Figure 1-8 Chapter 1
  • 15. Networks and the Internet• A social networking Web site encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Facebook below Chapter 1Page 14 Discovering Computers 2011: Living in a Digital World 15Figure 1-9 Chapter 1
  • 16. Computer Software• Software, also called a program or applications (Apps), tells the computer what tasks to perform and how to perform them • Operating system • Utility program Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Windows below Chapter 1Pages 15 - 16 Discovering Computers 2011: Living in a Digital World 16Figures 1-10 - 1-11 Chapter 1
  • 17. Computer Software• Installing is the process of setting up software to work with the computer, printer, and other hardwarePages 16 - 17 Discovering Computers 2011: Living in a Digital World 17Figure 1-12 Chapter 1
  • 18. Computer Software • A programmer develops software or writes the instructions that direct the computer to process data into informationPage 18 Discovering Computers 2011: Living in a Digital World 18Figure 1-13 Chapter 1
  • 19. Categories of Computers Personal computers Mobile computers and mobile devices Game consoles Servers Mainframes Supercomputers Embedded computersPage 19 Discovering Computers 2011: Living in a Digital World 19 Chapter 1
  • 20. Personal Computers• A personal computer can perform all of its input, processing, output, and storage activities by itself• Two popular architectures are the PC and the Apple – Desktop computerPage 19 Discovering Computers 2011: Living in a Digital World 20Figures 1-15 - 1-16 Chapter 1
  • 21. Mobile Computers and Mobile Devices Mobile Mobile Computer Device Personal computer you can Computing device small carry from place to place enough to hold in your hand Examples include notebook Examples include smart computers, laptop phones, PDAs, handheld computers, netbooks, ultra- computers, portable media thins, and Tablet PCs players, and digital camerasPages 20 - 23 Discovering Computers 2011: Living in a Digital World 21 Chapter 1
  • 22. Mobile Computers and Mobile Devices Notebook PDA Handheld Computer Tablet PC Portable Media Player SmartPhones Digital Camera Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Camera Phone below Chapter 1Pages 20 - 22 Discovering Computers 2011: Living in a Digital World 22Figures 1-17 – 1-20 Chapter 1
  • 23. Game Consoles • A game console is a mobile computing device designed for single-player or multiplayer video gamesPage 24 Discovering Computers 2011: Living in a Digital World 23Figure 1-24 Chapter 1
  • 24. Servers • A server controls access to the hardware, software, an d other resources on a network – Provides a centralized storage area for programs, data, and information – Server Types: File, Web, Print, DHCP, D NS Discovering Computers 2011: Living in a Digital WorldPage 25 24 Chapter 1Figure 1-25
  • 25. Mainframes • A mainframe is a large, expensive, powerf ul computer that can handle hundreds or thousands of connected users simultaneouslyPage 25 Discovering Computers 2011: Living in a Digital World 25 Chapter 1Figure 1-26
  • 26. Supercomputers• A supercomputer is the fastest, most powerful computer – Fastest supercomputers are capable of processing more than one quadrillion instructions in a single second – Owned by corporation – Government gencies – Rent computer time – Parallel ProcessingPage 25 Discovering Computers 2011: Living in a Digital World 26Figure 1-27 Chapter 1
  • 27. Embedded Computers• An embedded computer is a special-purpose computer that functions as a component in a larger product Consumer Home Automation Process Controllers Computer Devices Automobiles Electronics Devices and Robotics and Office Machines• Mobile and digital • Thermostats • Antilock brakes • Remote monitoring • Keyboards telephones • Sprinkling systems • Engine control systems • Printers• Digital televisions • Security modules • Power monitors • Faxes• Cameras monitoring systems • Airbag controller • Machine • Copiers• Video recorders • Appliances • Cruise control controllers• DVD players and • Lights • Medical devices recorders• Answering machinesPage 26 Discovering Computers 2011: Living in a Digital World 27 Chapter 1
  • 28. Embedded ComputersPage 26 Discovering Computers 2011: Living in a Digital World 28Figure 1-28 Chapter 1
  • 29. Elements of an Information System Hardware Software Data People Procedures Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Women in Technology below Chapter 1Page 27 Discovering Computers 2011: Living in a Digital World 29 Chapter 1
  • 30. Examples of Computer Usage Home User Small Office/Home Mobile User • Personal financial management Office User • Connect to other computers on • Web access • Look up information a network or the Internet • Communications • Send and receive e-mail • Transfer information • Entertainment messages • Play video games • Make telephone calls • Listen to music • Watch movies Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Minorities in Technology below Chapter 1Pages 28 – 31 Discovering Computers 2011: Living in a Digital World 30Figures 1-30 – 1-32 Chapter 1
  • 31. Examples of Computer Usage Power User Enterprise User • Work with multimedia • Communicate among • Use industry-specific employees software • Process high volumes of transactions • Blog Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Enterprise Computing below Chapter 1Pages 31 – 32 Discovering Computers 2011: Living in a Digital World 31Figures 1-33 – 1-34 Chapter 1
  • 32. Computer Applications in Society Education Finance Government Health CarePages 34 - 36 Discovering Computers 2011: Living in a Digital World 32Figures 1-36 – 1-39 Chapter 1
  • 33. Computer Applications in Society Science Publishing Travel Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click OnStar Manufacturing below Chapter 1Pages 36 - 38 Discovering Computers 2011: Living in a Digital World 33Figures 1-40 – 1-43 Chapter 1
  • 34. Summary Basic computer Components of a concepts computer Many different Networks, the categories of Internet, and computer computers, computer software users, and computer applications in societyPage 39 Discovering Computers 2011: Living in a Digital World 34 Chapter 1
  • 35. Discovering Computers 2011 Living in a Digital World Chapter 1 Complete