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Intro To Computers

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Transcript

  • 1. Introduction to Computers Frank R. Ceja Director of Technology Coachella Valley USD
  • 2. Brief History
    • 3000 B.C.
      • Invention of the abacus
    • 1943
      • 1st electronic computer ENIAC
    • 1975
      • MITS introduced the 1st microcomputer “Altair”
    • 1999
      • Microsoft is the most valuable business in the world
  • 3. Categories of Computers
    • Personal Computer
    • Servers
    • Minicomputer
    • Mainframe Computer
    • Super Computer
    Clones? Compatibles?
  • 4. Personal Computers
    • Monitor (CRT)
    • System Unit (CPU)
    • Keyboard
    • Mouse
    • Printer
  • 5. Information Processing Cycle Storage Output Process Input
  • 6. Discussion Topic
    • When you use your head to perform a simple calculation, in what way do you perform the four operations in the Information Processing Cycle
    Hmmmm? Storage Output Process Input
  • 7. Input
    • Keyboard
    • Mouse / Trackball
    • Scanner
    • Voice
    • Digital Camera
    • Barcode Reader
    • Video
  • 8. Process
    • Factors that affect processing
    • - Microprocessor (Pentium, Motorola)
    • - Memory (Amount & Speed)
    • RAM
    • ROM
    • - Bus Speed
    • - Architecture
  • 9. Output
    • Monitor
    • Printer
    • Speaker
  • 10. Storage
    • Floppy Disk
    • - 1.44 MB = 750 pages (approx.)
    • Hard Drive (Disk)
    • - 1 GB = 500,000 pages (approx.)
    • CD-ROM
    • - 650 MB = 350,000 pages (approx.)
    • = 74 minutes of audio
    • Portable disk (zip)??
  • 11. Storage: Bits & Bytes
    • A bit is the smallest unit of data (on or off)
    • 8-bits = 1 byte (ex. 01000100)
    • 1 thousand bytes = 1 kilobyte
    • 1 million bytes = 1 megabyte
    • 1 billion bytes = 1 gigabyte
    • 1 trillion bytes = 1 terabyte
  • 12. Processor Speed
    • Megahertz (MHz)
    • - number of clock cycles per second
    • - 450-MHz = 1/450,000,000 or 450 nanoseconds
    • MIPS (millions of instructions per second)
    • FLOPS (floating point operations per second)
  • 13. Discussion Topic
    • Do you feel that computers have made significant contributions to society? If so, in what ways?
  • 14. Data vs. Information
    • Data
      • Raw information
      • Has no meaning
    • Information
      • Processed data
      • Accurate
      • Timely
      • Useful
  • 15. Data
  • 16. Information
  • 17. Data
  • 18. Information
  • 19. Types of Software
    • System Software
    • - DOS
    • - OS/2
    • - Mac OS
    • - Windows 98/NT
    • Application Software
    • - Microsoft Office 97
    • - Corel WordPerfect Suite
    • - Print Shop Deluxe
  • 20. Group Discussion Peanut Butter Jelly
  • 21. Thank You for coming!

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