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Chapter 1 Introduction to Computers

Chapter 1 Introduction to Computers. A World of Computers. Notable Technology Prognostications “I think there is a world market for maybe five computers.” Thomas Watson, Chairman of IBM, 1943 “Computers in the future may weigh no more than one and a half tons.” Popular Mechanics, 1949

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Chapter 1 Introduction to Computers

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  1. Chapter 1 Introduction toComputers

  2. A World of Computers Notable Technology Prognostications “I think there is a world market for maybe five computers.” Thomas Watson, Chairman of IBM, 1943 “Computers in the future may weigh no more than one and a half tons.” Popular Mechanics, 1949 “There is no reason anyone would want a computer in their home.” Ken Olson, President of DEC, 1977

  3. Overview Explain Computer Literacy Define Computer Identify Computer Components Differentiate Computer Platforms Advantages and Disadvantages

  4. A World of Computers Next What is computer literacy? • Knowledge and understanding of computers and their uses • Dynamic definition p. 4-5 Fig. 1-1

  5. Literacy The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn. Alvin Toffler

  6. What Is a Computer? Acceptsdata Raw facts, figures, and symbols Processes data Produces and stores information • Data that is organized, meaningful, and useful Next How is a computer defined? • Electronic device operating under the control of instructions stored in its own memory p. 6

  7. How Computers Work

  8. Hardware • Input Devices • Used to Enter Data & Instructions • Keyboard • Mouse • Scanner • Digital Camera • Video Camera • Microphone

  9. Hardware • Output Devices • Conveys Information to User • Monitor • Printer • Speakers

  10. Hardware System Unit Box-like Device that contains electronic components Connected to Motherboard How does a tower differ?

  11. Hardware • Storage • Holds Data & Instructions for Future Use • Media • Physical Material • Device • Reads / Writes Data

  12. Microcomputers • Apple Macintosh usually uses the Macintosh operating system (Mac OS X) • PC and compatibles use the Windows operating system Click to view Web Link,click Chapter 1, Click Web Link from left navigation, then click Personal Computers below Chapter 1 Next What are the two most popular styles of desktop computers? p. 19 Figs. 1-15–1-16

  13. Computer Platforms

  14. Platforms Mobile Computers • Notebook • Formerly Laptop • Tablet

  15. Platforms Mobile Computers • PDA • Smart Phone • Handheld • i-Phone

  16. Game Consoles Mobile computing device designed for single-player or multiplayer video games Next What aregame consoles?

  17. Servers Next What types of servers are there? A networkserver controls access to network resources and provides centralized storage MainframeVery powerful, expensive computer that supports thousands of connected users SupercomputerThe fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

  18. Embedded Computers Next What is an embedded computer? • A special-purpose computer that functions as a component in a larger product component component larger product component p. 24 Fig. 1-26

  19. Embedded Computers Page 26 Figure 1-28

  20. Software • Programs • Series of Instructions • Tells Computer What to Do

  21. Data and Programs Data $ 90.52 Program $ Information 2 0 . 5 9

  22. Types of Data AUDIO any sound including speech and music VIDEO TEXT characters or numbers GRAPHICS Computer-generated images Motion images

  23. Advantages Computer Advantages Speed Reliability Consistency Storage Communications

  24. Disadvantages Computer Disadvantages Violation of Privacy Crime Impact on Labor Force Health Risks Impact on Environment

  25. Industry Applications Education • Distance Learning Finance • Online Banking & Investing, Tax Prep Government • 911 Dispatching, FBI Healthcare • Electronic Patient Records, telemedicine

  26. Industry Applications Publishing • E-books, PDF Manuals, MP3s Travel • Navigation Systems, Reservations, E-tickets Manufacturing • Production, Inventory, Quality Control

  27. Examples of Computer Usage Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Women in Technology below Chapter 1 Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Minorities in Technology below Chapter 1 Next What software is available for a home user? • Personal finance management • Web access • Communications • Entertainment p. 26 Fig. 1-28

  28. Examples of Computer Usage Next What software is available for a small office/home office (SOHO) user? • Productivity software • Specialty software • Web usage • E-mail p. 28 Fig. 1-30

  29. Examples of Computer Usage Next What is available for a mobile user? • Hardware • Notebook computers • Tablet PCs • Internet-enabled PDAs • Smart phones • Software • Word processing • Spreadsheet • Presentation graphicssoftware p. 29 Fig. 1-31

  30. Examples of Computer Usage Next What are the needs of a power user? • Speed and large amounts of storage • Types of power users • Engineers • Scientists • Architects • Desktop publishers • Graphic artists p. 29 Fig. 1-32

  31. Examples of Computer Usage Next What are the needs of the large business user? • Payroll • Inventory • E-commerce • Desktop publishing p. 30 Figs. 1-33

  32. Summary of Introduction to Computers The uses of the Internet Basic computer concepts Computer software The term, computer Categories of computers The components of a computer Types of computer users The advantages and disadvantages of using computers Computer applications in society The purpose of a network Chapter 1 Complete

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