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Computer Essentials

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Computer Essentials

  1. 1. Computing Essentials Chapter 3
  2. 2. Interview <ul><li>William P. Fisher Darden Eminent Scholar Chair Rosen School of Hospitality Management University of Central Florida Past President of AH&LA </li></ul>
  3. 3. Interview (cont.) <ul><li>Skills needed for a recent graduate: </li></ul><ul><ul><li>Good attitude </li></ul></ul><ul><ul><li>Experience </li></ul></ul><ul><ul><li>Knowledge of Industry Particulars i.e., RevPar </li></ul></ul><ul><ul><li>Can be productive and see big picture </li></ul></ul>
  4. 4. Interview (cont.) <ul><li>Career advice </li></ul><ul><ul><li>Stay on cutting edge </li></ul></ul><ul><ul><li>Gain management skills-coaching </li></ul></ul><ul><ul><li>Learn what you don’t know about your organization </li></ul></ul>
  5. 5. 1. Introduction <ul><li>What is a computer? </li></ul><ul><li>How does it work? </li></ul><ul><li>What is under that cover? </li></ul>
  6. 6. 2. System Input Process Output <ul><li>Data vs. Information </li></ul>
  7. 7. 2. Bits, Nibbles, and Bytes (cont.) <ul><li>Bi nary Digi ts </li></ul><ul><li>On/Off: 1/0 </li></ul><ul><li>Byte:Bit 8:1 </li></ul><ul><li>ASCII – American Standard Code for Information Interchange </li></ul><ul><li>01000011011000010111001001111001 </li></ul><ul><li>01000011 01100001 01110010 01111001 </li></ul><ul><li>=Cary </li></ul>
  8. 8. 2. Measurements (cont.) <ul><li>1024 bytes = 1 kilobyte </li></ul><ul><li>1024 kilobytes = 1 megabyte </li></ul><ul><li>1024 megabytes = 1 gigabyte </li></ul><ul><li>1024 gigabytes = 1 terabyte </li></ul>
  9. 9. 2. Analog vs. Digital (cont.) <ul><li>Analog = sine wave (continuous) </li></ul><ul><li>Digital has only two states </li></ul><ul><ul><li>High Voltage (1) and Low Voltage (0) </li></ul></ul><ul><li>Analog and digital can be used in conjunction with one another for greater efficiency </li></ul>
  10. 10. 3. Hardware <ul><li>Physical equipment of the computer system </li></ul><ul><li>Required Components </li></ul><ul><ul><li>Input/Output (I/0) Devices </li></ul></ul><ul><ul><li>Central Processing Unit (CPU) </li></ul></ul><ul><ul><li>External Storage Device </li></ul></ul>
  11. 11. 3. Types of Computers (cont.) <ul><li>Palmtop </li></ul><ul><li>Laptop </li></ul><ul><li>Desktop </li></ul><ul><li>Server </li></ul><ul><li>Supercomputer </li></ul>
  12. 12. 3. Hardware Terms (cont.) <ul><li>Motherboard (PCB) </li></ul><ul><li>Central Processing Unit (CPU) </li></ul><ul><li>Memory </li></ul><ul><ul><li>RAM (Random Access Memory) </li></ul></ul><ul><ul><ul><li>DRAM (64 bit DIMM) </li></ul></ul></ul><ul><ul><li>ROM (Read Only Memory) </li></ul></ul><ul><ul><li>Flash Memory </li></ul></ul><ul><li>Peripherals </li></ul>
  13. 13. 3. Storage (cont.) <ul><li>Hard drive </li></ul><ul><li>Iomega ® Zip Drive </li></ul><ul><li>Floppy </li></ul><ul><li>CD-ROM/R/RW </li></ul><ul><li>DVD/R/RW </li></ul><ul><li>Compact Flash/Smart Media/Sony ® Memory Stick </li></ul><ul><li>USB Drive </li></ul>
  14. 14. 3. Displays (cont.) <ul><li>Cathode Ray Tube (CRT) </li></ul><ul><li>Liquid Crystal Display (LCD) </li></ul><ul><li>Plasma </li></ul><ul><li>Sharpness </li></ul><ul><li>Display Mode (Color) </li></ul><ul><li>Dot Pitch (DPI) </li></ul><ul><li>Pixels </li></ul>
  15. 15. 3. Central Processing Unit (CPU) (cont.) <ul><li>Register </li></ul><ul><li>Arithmetic Logic Unit (ALU) </li></ul><ul><li>Control Unit </li></ul><ul><li>Data Storage </li></ul>Get Instructions Decode Instructions Execute Instructions Store Results
  16. 16. 3. I feel the need for speed! (cont.) <ul><li>The speed limit of a computer’s microprocessor or bus (the circuitry) </li></ul><ul><ul><li>Megahertz (MHz) </li></ul></ul><ul><ul><ul><li>1 MHz = 1 million cycles per second </li></ul></ul></ul><ul><ul><li>Gigahertz (GHz or Gig) </li></ul></ul><ul><ul><ul><li>1 Gig = 1 billion cycles per second </li></ul></ul></ul>
  17. 17. 4. Software <ul><li>Programming Languages </li></ul><ul><li>Operating Systems </li></ul><ul><li>Applications </li></ul><ul><li>Integrated vs. Interfaced </li></ul>
  18. 18. 5. Operating System <ul><li>Starts the computer (BIOS) </li></ul><ul><li>Limits direct hardware contact </li></ul><ul><li>Graphical user interface (GUI) </li></ul><ul><li>Manages the processing of programs </li></ul><ul><li>Advance processing features </li></ul><ul><li>Manages input and output devices </li></ul><ul><li>Manages filing operations and storage </li></ul>
  19. 19. 6. Summary <ul><li>Understanding technology critical </li></ul><ul><li>“ People” provide the information </li></ul><ul><li>Quality software provides the value </li></ul><ul><li>Additional Resources www.howstuffworks.com www.cnet.com www.upside.com </li></ul>

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