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  1. 1. Computers: Information Technology in Perspective, 11e Chapter 1 The Technology Revolution Copyright Prentice Hall, Inc.
  2. 2. Objectives <ul><li>Once you have read and studied this chapter, you will have learned: </li></ul><ul><ul><li>How information technology influences our society and you at work, at home, and at play. </li></ul></ul><ul><ul><li>What it means to achieve IT competency and become an active participant in our information society. </li></ul></ul><ul><ul><li>How local and worldwide computer networks impact businesses and society. </li></ul></ul><ul><ul><li>Essential hardware, software, and computer system terminology that will enable you to begin your information technology learning adventure with confidence. </li></ul></ul><ul><ul><li>The relative size, scope, uses, and variety of available computer systems. </li></ul></ul><ul><ul><li>The fundamental components and capabilities of an IT system. </li></ul></ul><ul><ul><li>A variety of enterprise computing and personal computing applications. </li></ul></ul>Copyright Prentice Hall, Inc.
  3. 3. Why this chapter is important to you! <ul><li>Computers and technology are a part of everything we do </li></ul><ul><li>Computers and new technologies will continue to play an even greater role in the future </li></ul><ul><li>Computers help make work tasks easier </li></ul><ul><li>The more you know about computers the more money you are capable of earning </li></ul>Copyright Prentice Hall, Inc.
  4. 4. Our Information Society <ul><li>Ask yourself what it will be like in the year 2020 </li></ul><ul><li>Most adults are considered knowledge workers </li></ul><ul><li>IT changes how we work, learn, and communicate </li></ul><ul><li>Knowing computers will help you cope with IT </li></ul>Copyright Prentice Hall, Inc.
  5. 5. The Technology Revolution: Today <ul><li>At Work </li></ul><ul><ul><li>The mobile worker </li></ul></ul><ul><ul><li>Productivity </li></ul></ul><ul><ul><li>Communication </li></ul></ul><ul><ul><li>Access </li></ul></ul><ul><li>At Home </li></ul><ul><ul><li>Communication </li></ul></ul><ul><ul><li>Personal correspondence </li></ul></ul><ul><ul><li>Homework </li></ul></ul><ul><ul><li>Connection </li></ul></ul><ul><li>At Play </li></ul><ul><ul><li>Leisure activities </li></ul></ul><ul><ul><li>Communication </li></ul></ul><ul><ul><li>Gaming </li></ul></ul><ul><ul><li>Connection </li></ul></ul>Copyright Prentice Hall, Inc.
  6. 6. The Technology Revolution: Tomorrow <ul><li>Search for a home around the country </li></ul><ul><li>Obtain a doctor’s consultation via telemedicine </li></ul><ul><li>Information superhighway will connect every facet of our society </li></ul>Copyright Prentice Hall, Inc.
  7. 7. Looking Back a Few Years Copyright Prentice Hall, Inc. 1950 1960s mid- 1970s 2001 ENAIC & UNIVAC I PCs introduced! Very expensive computers for large companies. Computer professionals ran the show. Powerful PCs on every desktop. Explosion of applications. 2003 Home computers & networks
  8. 8. Rx for Cyberphobia: Information Technology Competency <ul><li>Feeling comfortable </li></ul><ul><li>Making the computer work for you </li></ul><ul><li>Interacting with the computer </li></ul><ul><li>Comfortable in cyberspace </li></ul><ul><li>Understanding the impact of computers on society </li></ul><ul><li>Making intelligent decisions </li></ul><ul><li>Knowing the lingo </li></ul>Copyright Prentice Hall, Inc.
  9. 9. Reasons to Become IT-Competent <ul><li>Personal </li></ul><ul><ul><li>Travel arrangements </li></ul></ul><ul><ul><li>Sports scores </li></ul></ul><ul><ul><li>Managing finances </li></ul></ul><ul><li>Workplace </li></ul><ul><ul><li>Strategic planning </li></ul></ul><ul><ul><li>Competitive advantage </li></ul></ul><ul><ul><li>Obtaining work </li></ul></ul><ul><ul><li>Day-to-day processes </li></ul></ul><ul><ul><li>Productivity </li></ul></ul><ul><li>Educational </li></ul><ul><ul><li>Any-time-any place learning </li></ul></ul><ul><ul><li>Individual learning </li></ul></ul><ul><li>Societal </li></ul><ul><ul><li>Ethical issues </li></ul></ul><ul><ul><li>Harmful risks </li></ul></ul><ul><li>Curiosity </li></ul><ul><ul><li>Natural curiosity for IT power </li></ul></ul>Copyright Prentice Hall, Inc.
  10. 10. The Computer Proficiency Digital Divide <ul><li>120 million people are considered knowledge workers </li></ul><ul><li>100 million are not considered IT competent </li></ul><ul><li>Most think they are IT competent </li></ul><ul><li>Questions to ask: </li></ul><ul><ul><li>Can you list five critical IT issues? </li></ul></ul><ul><ul><li>Which port is faster, USB or 1394? </li></ul></ul><ul><ul><li>When should you use your defragmenter? </li></ul></ul><ul><ul><li>What type of wiring do you need for a home network? </li></ul></ul><ul><ul><li>The list goes on and on… </li></ul></ul>Copyright Prentice Hall, Inc.
  11. 11. The NET Connection: Our Global Village <ul><li>Over 80% of classrooms and libraries in the US are linked to the Internet </li></ul><ul><li>Most computers in the workplace are part of a network </li></ul><ul><li>Worldwide networks coordinate services and consumer goods </li></ul><ul><li>Global economy is changing </li></ul>Copyright Prentice Hall, Inc.
  12. 12. The Net Connection: The Internet <ul><li>The Internet connects millions of computers in every country all over the world </li></ul><ul><li>All colleges and most businesses have access to the Internet </li></ul><ul><li>Most subscribe to an ISP to gain Internet access </li></ul><ul><li>Others subscribe to an information service, such as AOL </li></ul><ul><li>A modem permits access via phone and/or cable </li></ul><ul><li>Individuals can access Web sites, music, products and lots more </li></ul>Copyright Prentice Hall, Inc.
  13. 13. The Basics: Hardware <ul><li>A computer system: </li></ul><ul><ul><li>Input </li></ul></ul><ul><ul><ul><li>Keyboard/Mouse </li></ul></ul></ul><ul><ul><li>Processor </li></ul></ul><ul><ul><ul><li>Chip </li></ul></ul></ul><ul><ul><li>Output </li></ul></ul><ul><ul><ul><li>Monitor/Printer </li></ul></ul></ul><ul><ul><li>Storage </li></ul></ul><ul><ul><ul><li>Permanent (Hard Disk) </li></ul></ul></ul><ul><ul><ul><li>Temporary (RAM) </li></ul></ul></ul><ul><li>A processor is the heart of the computer </li></ul>Copyright Prentice Hall, Inc.
  14. 14. The Basics: Software <ul><li>Software tells the computer what to do </li></ul><ul><li>System software takes control of the computer upon start up </li></ul><ul><ul><li>Windows </li></ul></ul><ul><ul><li>DOS </li></ul></ul><ul><li>Application software performs specific task </li></ul><ul><ul><li>Word </li></ul></ul><ul><ul><li>Excel </li></ul></ul>Copyright Prentice Hall, Inc.
  15. 15. The Basics: Computer Systems <ul><li>Low end $500 desktop </li></ul><ul><li>High end very expensive supercomputer </li></ul><ul><li>High/low end all have same four system components: </li></ul><ul><ul><li>Input </li></ul></ul><ul><ul><li>Processing </li></ul></ul><ul><ul><li>Output </li></ul></ul><ul><ul><li>Storage </li></ul></ul>Copyright Prentice Hall, Inc.
  16. 16. Personal Computers <ul><li>1981: IBM PC </li></ul><ul><li>Many manufacturers followed with 100% IBM PC compatibles </li></ul><ul><li>Other PCs: </li></ul><ul><ul><li>Apple Power Mac </li></ul></ul><ul><ul><li>Powerbook </li></ul></ul><ul><ul><li>iMac </li></ul></ul><ul><ul><li>iPod </li></ul></ul><ul><ul><li>iPhone </li></ul></ul>Copyright Prentice Hall, Inc.
  17. 17. Notebook PCs <ul><li>Early notebook PCs did not have the power of a desktop PC </li></ul><ul><li>Now notebooks offer the same level of performance </li></ul><ul><li>Notebook PCs: </li></ul><ul><ul><li>Light </li></ul></ul><ul><ul><li>Compact </li></ul></ul><ul><ul><li>Portable </li></ul></ul><ul><ul><li>A docking station is used to configure the notebook to act like a larger desktop </li></ul></ul><ul><ul><li>Ports allow devices to be connected, such as a printer </li></ul></ul>Copyright Prentice Hall, Inc.
  18. 18. Desktop PCs <ul><li>Typical Desktop PC: </li></ul><ul><ul><li>Motherboard </li></ul></ul><ul><ul><li>Keyboard </li></ul></ul><ul><ul><li>Point and draw device </li></ul></ul><ul><ul><li>Monitor </li></ul></ul><ul><ul><li>Printer </li></ul></ul><ul><ul><li>Hard disk </li></ul></ul><ul><ul><li>Floppy </li></ul></ul><ul><ul><li>CD-ROM or DVD-ROM </li></ul></ul><ul><ul><li>Microphone </li></ul></ul><ul><ul><li>Speakers </li></ul></ul>Copyright Prentice Hall, Inc.
  19. 19. Wearable PCs <ul><li>Cable connected modules that fit into headsets, drape on shoulders, hang around the neck, or more </li></ul><ul><li>TLC PC for paramedics is a good example </li></ul><ul><li>As time goes on vendors will be concerned with fashion, as well as function </li></ul><ul><li>The Body Net is a great example </li></ul>Copyright Prentice Hall, Inc.
  20. 20. Handhelds <ul><li>Specifically designed to be held in the hand </li></ul><ul><li>Example: </li></ul><ul><ul><li>Palmtop </li></ul></ul><ul><ul><li>PDA </li></ul></ul><ul><ul><li>Organizer </li></ul></ul><ul><li>Some have wireless capability </li></ul><ul><li>Use an electronic pen to work with most </li></ul>Copyright Prentice Hall, Inc.
  21. 21. Computer System Capabilities Processing Data and Producing Information <ul><li>Information used to be only collected, sorted, summarized, exchanged and processed </li></ul><ul><li>Now information communicates, makes money available via ATMs, teaches, and lots more </li></ul>Copyright Prentice Hall, Inc.
  22. 22. Computers in Action: A Payroll System <ul><li>Most organizations use a payroll system </li></ul><ul><li>The system enables input and processes the checks </li></ul><ul><li>The system also processes reports and stores information </li></ul>Copyright Prentice Hall, Inc.
  23. 23. The Computer’s Strengths <ul><li>Speed </li></ul><ul><li>Accuracy </li></ul><ul><li>Consistency </li></ul><ul><li>Reliability </li></ul><ul><li>Communications </li></ul><ul><li>Memory capability </li></ul><ul><li>Human vs. computer capabilities </li></ul>Copyright Prentice Hall, Inc.
  24. 24. How Do We Use Computers? <ul><li>Enterprise Computing </li></ul><ul><ul><li>Information systems </li></ul></ul><ul><ul><li>Process/device control </li></ul></ul><ul><ul><li>Science, research, & engineering </li></ul></ul><ul><li>Personal Computing </li></ul><ul><ul><li>Games </li></ul></ul><ul><ul><li>Education </li></ul></ul><ul><ul><li>Work </li></ul></ul>Copyright Prentice Hall, Inc.
  25. 25. Computer Decisions <ul><li>Purchasing decisions </li></ul><ul><li>Software decisions </li></ul><ul><ul><li>Word processing </li></ul></ul><ul><ul><li>Presentation </li></ul></ul><ul><ul><li>Spreadsheet </li></ul></ul><ul><ul><li>Database </li></ul></ul><ul><ul><li>And more… </li></ul></ul>Copyright Prentice Hall, Inc.
  26. 26. Summary <ul><li>Our Information Society </li></ul><ul><ul><li>IT competency </li></ul></ul><ul><ul><li>Getting connected </li></ul></ul><ul><ul><li>Knowing the hardware basics </li></ul></ul><ul><ul><li>Personal computers to supercomputers </li></ul></ul><ul><ul><li>Computer system capabilities </li></ul></ul><ul><ul><li>Using computers </li></ul></ul>Copyright Prentice Hall, Inc.