Topic 1 introduction to computers

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Topic 1 introduction to computers

  1. 1. Chapter 1 Basic Introduction to Computers Discovering Computers 2012 Your Interactive Guide to the Digital World
  2. 2. Objectives Overview Explain why computer literacy is vital to success in today’s world Define the term, computer, and describe the relationship between data and information Describe the five components of a computer Discuss the advantages and disadvantages that users experience when working with computers Define the term, network, and identify benefits of sharing resources on a network Discuss the uses of the Internet and World Wide Web See Page 3 for Detailed Objectives Discovering Computers 2012: Chapter 1 2
  3. 3. Objectives Overview Distinguish between system software and application software Differentiate among types, sizes, and functions of computers in each category Explain how home users, small office/home office users, mobile users, power users, and enterprise users each interact with computers See Page 3 for Detailed Objectives Describe the role of each element in an information system Discuss how society uses computers in education, finance, government, health care, science, publishing, travel, and manufacturing Discovering Computers 2012: Chapter 1 3
  4. 4. A World of Computers • Computers are everywhere Pages 4 - 5 Figure 1-1 Discovering Computers 2012: Chapter 1 4
  5. 5. What Is a Computer? • A computer is an electronic device, operating under the control of instructions stored in its own memory Collects data (input) Processing Produces information (output) Information Processing Cycle Page 6 Discovering Computers 2012: Chapter 1 5
  6. 6. What Is a Computer? Page 6 Figure 1-2 Discovering Computers 2012: Chapter 1 6
  7. 7. The Components of a Computer • A computer contains many electric, electronic, and mechanical components known as hardware Input Device Output Device • Allows you to enter data and instructions into a computer • Hardware component that conveys information to one or more people System Unit • Case that contains the electronic components of the computer that are used to process data Storage Device • Records (writes) and/or retrieves (reads) items to and from storage media Communications Device • Enables a computer to send and receive data, instructions, and information to and from one or more computers or mobile devices Pages 6 - 8 Discovering Computers 2012: Chapter 1 7
  8. 8. The Components of a Computer Page 7 Figure 1-3 Discovering Computers 2012: Chapter 1 8
  9. 9. Advantages and Disadvantages of Using Computers Advantages of Using Computers Speed Health Risks Reliability Violation of Privacy Consistency Public Safety Storage Impact on Labor Force Communications Pages 9 - 10 Disadvantages of Using Computers Impact on Environment Discovering Computers 2012: Chapter 1 9
  10. 10. Advantages and Disadvantages of Using Computers • Green computing involves reducing the electricity consumed and environmental waste generated when using a computer • Strategies include: – – – – Page 10 Recycling Regulating manufacturing processes Extending the life of computers Immediately donating or properly disposing of replaced computers Discovering Computers 2012: Chapter 1 10
  11. 11. Categories of Computers Personal computers Mobile computers and mobile devices Game consoles Servers Mainframes Supercomputers Embedded computers Page 19 Discovering Computers 2012: Chapter 1 11
  12. 12. 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 computer Pages 19 - 20 Figures 1-15 - 1-16 Discovering Computers 2012: Chapter 1 12
  13. 13. Mobile Computers and Mobile Devices Mobile Computer Mobile Device Personal computer you can carry from place to place Examples include notebook computers, laptop computers, netbooks, ultrathins, and Tablet PCs Pages 20 - 23 Computing device small enough to hold in your hand Examples include smart phones and PDAs, e-book readers, handheld computers, portable media players, and digital cameras Discovering Computers 2012: Chapter 1 13
  14. 14. Mobile Computers and Mobile Devices Notebook computer Tablet PC Smart phones and PDAs E-book reader Pages 20 - 22 Figures 1-17 – 1-20 Discovering Computers 2012: Chapter 1 14
  15. 15. Mobile Computers and Mobile Devices Handheld computer Portable media player Digital camera Pages 22 - 23 Figures 1-21 – 1-23 Discovering Computers 2012: Chapter 1 15
  16. 16. Game Consoles • A game console is a mobile computing device designed for single-player or multiplayer video games Page 24 Figure 1-24 Discovering Computers 2012: Chapter 1 16
  17. 17. 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 Page 25 Figure 1-25 Discovering Computers 2012: Chapter 1 17
  18. 18. Mainframes • A mainframe is a large, expensive, powerf ul computer that can handle hundreds or thousands of connected users simultaneously Page 25 Figure 1-26 Discovering Computers 2012: Chapter 1 18
  19. 19. Supercomputers • A supercomputer is the fastest, most powerful computer – Fastest supercomputers are capable of processing more than one quadrillion instructions in a single second Page 25 Figure 1-27 Discovering Computers 2012: Chapter 1 19
  20. 20. Embedded Computers • An embedded computer is a special-purpose computer that functions as a component in a larger product Consumer Electronics • Mobile and digital telephones • Digital televisions • Cameras • Video recorders • DVD players and recorders • Answering machines Page 26 Home Automation Devices Automobiles • Thermostats • Sprinkling systems • Security monitoring systems • Appliances • Lights • Antilock brakes • Engine control modules • Airbag controller • Cruise control Process Controllers and Robotics • Remote monitoring systems • Power monitors • Machine controllers • Medical devices Discovering Computers 2012: Chapter 1 Computer Devices and Office Machines • Keyboards • Printers • Faxes • Copiers 20
  21. 21. Embedded Computers Page 26 Figure 1-28 Discovering Computers 2012: Chapter 1 21
  22. 22. Elements of an Information System Hardware Software People Page 27 Data Procedures Discovering Computers 2012: Chapter 1 22
  23. 23. Elements of an Information System Page 27 Figure 1-29 Discovering Computers 2012: Chapter 1 23
  24. 24. Examples of Computer Usage Home User • Personal financial management • Web access • Communications • Entertainment Pages 28 – 31 Figures 1-30 – 1-32 Small Office/Home Office User • Look up information • Send and receive e-mail messages • Make telephone calls Discovering Computers 2012: Chapter 1 Mobile User • Connect to other computers on a network or the Internet • Transfer information • Play video games • Listen to music • Watch movies 24
  25. 25. Examples of Computer Usage Power User • Work with multimedia • Use industry-specific software Pages 31 – 32 Figures 1-33 – 1-34 Enterprise User • Communicate among employees • Process high volumes of transactions • Blog Discovering Computers 2012: Chapter 1 25
  26. 26. Computer Applications in Society Education Finance Government Health Care Pages 34 - 36 Figures 1-36 – 1-39 Discovering Computers 2012: Chapter 1 26
  27. 27. Computer Applications in Society Science Publishing Travel Manufacturing Pages 36 - 38 Figures 1-40 – 1-43 Discovering Computers 2012: Chapter 1 27
  28. 28. Video: Computer History in a Barn CLICK TO START Discovering Computers 2012: Chapter 1 28
  29. 29. Summary Basic computer concepts Components of a computer Many different categories of computers, computer users, and computer applications in society Page 39 Discovering Computers 2012: Chapter 1 29
  30. 30. Chapter 1 Basic Introduction to Computers Discovering Computers 2012 Your Interactive Guide to the Digital World Chapter 1 Complete
  31. 31. Discovering Computers 2012: Chapter 1 31
  32. 32. The Challenge Box • Group yourselves into 5 • Create 4 questions based on the previous lessons (identification or enumeration questions – 1/8sheet of y.p. per question, always put your group number on the upper right corner of the paper ) • At the back of the portion of the question, put the number which corresponds to the number of the other group. Discovering Computers 2012: Chapter 1 32
  33. 33. Scoring: • Each question answered correctly (identified correctly) by any member of the group is equivalent to 2 points • After the question was answered, another member will give an example (minimum of 2 examples) of the application of the answered question ( 3 points) • After the group have been identified the answers and gave their examples, they will give a number to the instructor, that number will depend on the range given by the instructor to choose the next group to be on the hot seat! • A follow up questions may be thrown to the answering group by any group from the class. Discovering Computers 2012: Chapter 1 33

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