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Computer Hardware 1

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Transcript

  • 1. Computer Hardware
  • 2. Computer
    • An electronic device that is programmed to receive data, change the data to information, present the information and store the information
  • 3. Computer System
    • A computer and all the devices connected to it.
  • 4. Categories of Computers
  • 5. Microcomputer
    • Small desktop size
    • Priced under $10,000
    • Home computers—word processing, education, Internet use
    • Personal Computers—used in business can use many input/output devices, communicate with larger computers
    • Portable computers—similar to home computers but lightweight and compact, battery operated
  • 6. Minicomputer
    • More powerful than microcomputer
    • Can support a large number of users performing different tasks
    • Cost from $25,000 to several $100,000
  • 7. Main Frame
    • Process transactions at a very high rate
    • Can handle numerous users
    • Store large amounts of data
    • Priced from several $100,000 to several million
    • Requires specialized environment
  • 8. Super Computers
    • The largest most powerful computers
    • Represents the most advanced technology
    • Used by military, NASA and others
  • 9. Factors in Classification of Computers
    • Price
    • Size
    • Speed
    • Processing Capabilities
  • 10. Computer Program
    • Set of commands
    • List of instructions that “tells” computer what to do.
    • Written in special languages
    • Allows computer to change data into information.
  • 11. DATA
    • Raw facts entered into the computer
  • 12. Information
    • Result of data processing
  • 13.