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Introduction to Computers

Chapter 1. Introduction to Computers. Overview. Explain Computer Literacy Define Hardware & Software Identify Computer Components Differentiate Various Software Types Differentiate Computer Platforms. A World of Computers. Notable Technology Prognostications

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Introduction to Computers

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  1. Chapter 1 Introduction to Computers

  2. Overview • Explain Computer Literacy • Define Hardware & Software • Identify Computer Components • Differentiate Various Software Types • Differentiate Computer Platforms

  3. 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

  4. A World of Computers • Computer Use • Everywhere • Impact Virtually Everyone • Creation, Collection, Dissemination • Price/Power • Competition • Computer Literacy • Understanding of Computers and Their Uses • Technical Knowledge Not Required

  5. What is a Computer? • Definition • Electronic Machine • Controlled by Instructions in its Memory • Accepts Data • Raw Facts, Figures, & Symbols • Processes Data Into Information • Organized, Meaningful, and Useful • Produces & Stores Results

  6. What is a Computer? • Information Processing Cycle • Input — Accepts Data • Processing — Manipulate Data • Output — Produce Result • Storage — Store Result • Communication — Send Result to Others

  7. Hardware • Components & Equipment • Electronic • Mechanical

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

  9. Hardware • System Unit • Enclosed in a Case • Contains Electronic Components • Connected to Motherboard • Processes Data • Memory • Temporary Storage for Data & Instructions • Central Processing Unit (CPU) • Carries Out Instructions • Tells Computer What to Do

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

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

  12. Hardware • Communications Devices • Send / Receive Data & Instructions • Establishes Connection Between Devices • Uses Telephone Lines, Cables, & Satellites • Modem • Converts Digital Signals to Analog & Vice Versa

  13. Hardware • Networks • Connected Computers / Devices • Share Resources • Hardware • Software • Data & Information • Save Time & Money • Internet • Millions of Computers Linked Worldwide

  14. Software • AKA Program • Series of Instructions • Tells Computer What to Do

  15. Software • Systems Software • Controls Operations & Hardware • Operating System • Utility Programs • Application Software • Performs Specific Tasks for Users • Word Processing • Spreadsheet • Database

  16. Platforms • Personal Computers • Desktops • PCs & Compatibles • Windows OS • Apple • Macintosh OS

  17. Platforms • Mobile Computers • Portable • Notebook • AKA Laptop • Tablet • Stylus, Annotation • Netbook • Smaller, WI-FI, No DVD

  18. Platforms • Mobile Devices • Smart Phone • Horizontal • Media Player • Digital Camera • Handheld • Vertical

  19. Platforms • Game Console • Video Games • Embedded • Component in Larger Product • Phone, Thermostat, Security, Airbag

  20. Platforms • Larger Systems • Servers • Networks • Mainframe • Supercomputer

  21. Platforms • Comparison

  22. Industry Applications • Education • Distance Learning • Finance • Online Banking & Investing, Tax Prep • Government • 911 Dispatching, Squad Notebooks • Healthcare • Electronic Patient Records, PPID

  23. Industry Applications • Science • Collect, Analyze, & Model Data • Publishing • E-books, PDF Manuals, MP3s • Travel • Navigation Systems, E-tickets • Manufacturing • Production, Inventory, Quality Control

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