Introduction to Computers Frank R. Ceja Director of Technology Coachella Valley USD
Brief History <ul><li>3000 B.C. </li></ul><ul><ul><li>Invention of the abacus </li></ul></ul><ul><li>1943 </li></ul><ul><u...
Categories of Computers <ul><li>Personal Computer </li></ul><ul><li>Servers </li></ul><ul><li>Minicomputer </li></ul><ul><...
Personal Computers <ul><li>Monitor (CRT) </li></ul><ul><li>System Unit (CPU) </li></ul><ul><li>Keyboard </li></ul><ul><li>...
Information Processing Cycle Storage Output Process Input
Discussion Topic <ul><li>When you use your head to perform a simple calculation, in what way do you perform the four opera...
Input <ul><li>Keyboard </li></ul><ul><li>Mouse / Trackball </li></ul><ul><li>Scanner </li></ul><ul><li>Voice </li></ul><ul...
Process <ul><li>Factors that affect processing </li></ul><ul><li>-  Microprocessor (Pentium, Motorola) </li></ul><ul><li>-...
Output <ul><li>Monitor </li></ul><ul><li>Printer </li></ul><ul><li>Speaker </li></ul>
Storage <ul><li>Floppy Disk </li></ul><ul><li>-  1.44 MB = 750 pages  (approx.) </li></ul><ul><li>Hard Drive (Disk) </li><...
Storage: Bits & Bytes <ul><li>A bit is the smallest unit of data (on or off) </li></ul><ul><li>8-bits = 1 byte (ex. 010001...
Processor Speed <ul><li>Megahertz (MHz) </li></ul><ul><li>-  number of clock cycles per second </li></ul><ul><li>-  450-MH...
Discussion Topic <ul><li>Do you feel that computers have made significant contributions to society?  If so, in what ways? ...
Data vs. Information <ul><li>Data </li></ul><ul><ul><li>Raw information </li></ul></ul><ul><ul><li>Has no meaning </li></u...
Data
Information
Data
Information
Types of Software <ul><li>System Software </li></ul><ul><li>-  DOS </li></ul><ul><li>-  OS/2 </li></ul><ul><li>-  Mac OS <...
Group Discussion Peanut Butter Jelly
Thank You for coming!
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Intro To Computers

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Intro To Computers

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

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