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Discovering Computers

Discovering Computers. Chapter 1: Introduction to Computers. Computer Literacy. Having knowledge and understanding of computers and their uses. A World of Computers. Computers are everywhere: at work, at school and at home Communication Text Messages, Pictures, Diagrams, Music, Videos

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Discovering Computers

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  1. Discovering Computers Chapter 1: Introduction to Computers

  2. Computer Literacy Having knowledge and understanding of computers and their uses.

  3. A World of Computers • Computers are everywhere: at work, at school and at home • Communication • Text Messages, Pictures, Diagrams, Music, Videos • Instant Access to Information • National News, weather reports, maps, credit reports, educational material • Manage Daily Activities • Balance checkbook, Letters, Presentations, navigation systems • Leisure Time Activities • Play games, listen to music, read books, plan vacations

  4. What is a COMPUTER? • An electronic device, operating under the control of instructions stored in its own memory unit, that can accept data, manipulate data according to specific rules, produce information from the processing, and store the results for future use.

  5. Hardware in a Computing Environment • Input Devices • Output Devices • System Unit • Storage Devices • storage media • Communication Devices

  6. Advantages of Using A Computer • Speed • Reliability • Consistency • Storage • Communications

  7. Disadvantages of computer • Violation of Privacy • Impact on Labor Force • Health Risk • Impact on Environment

  8. Network • Collection of computers and devices connected together • Share resources such as hardware, software, data • Server/Client

  9. The Internet • World’s largest Network • Millions of computers • Over 360 million users • World wide • Reasons for using • Sending messages (e-mail) • Accessing information • Shopping • Meeting or conversing • Entertainment • Games • Magazines • Vacation planning guides

  10. The World Wide Web • One segment of the Internet • Contains billions of documents • Web pages • Web site • Collection of related web pages • Viewed using Web Browser • IE –Netscape

  11. Computer Software • Software/program – series of instructions that tell computer what to do • GUI – Graphics User Interface • System Software – control operations of computer and devices • operating system – coordinates activities among computer hardware • utility programs – maintain devices and programs • Application Software – makes user more productive or assists with personal tasks

  12. Categories of Computers • Embedded Computers • Consumer Electronics, Automobiles, Office Machines, Home Automation • Personal Computers • Desktop • Mobile Computers : • Notebook/laptop • Tablet PC (digital pen) • Mobile Devices • handheld – industry-specific • PDAs -organizers • smart phones –internet enabled phone with PDA capabilities • smart watches – internet enabled watch • Game Consoles • Nintendo’s Game Boy • Sony’s Playstation

  13. Categories of Computers (cont) • Servers • Controls resources on a network • Centralized storage area • Mainframes • handles hundreds of thousands connected users simultaneously (DELTA) • Supercomputer • fastest most powerful (weather forecasting, nuclear energy research)

  14. Register to View Book Resources Discovering Computers 2007 by Shelly Cashman and Vermatt http://www.scsite.com/dc2007 New User Registration http://login.course.com

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