Intro to Computers
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Intro to Computers






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Intro to Computers Intro to Computers Presentation Transcript

  • Essential Introduction to Computers Mrs. Bryant Computer Information Systems
  • What Is a Computer?
    • A computer is an electronic device, operating under the control of instructions stored in its own memory , that can accept data ( input ), process the data according to specified rules (process), produce results ( output ), and store the results ( storage ) for future use
  • What makes a computer so powerful? SPEED A computer can do billions of actions per second RELIABILITY Failures are usually due to human error, one way or another STORAGE A computer can keep huge amounts of data and is easily organized
  • What Are the Components of a Computer?
    • Input
    • Memory
    • Storage
    • Processor
    • Output
    I need 3 volunteers! Input Memory Storage Processor Output
  • Information Processing Cycle (4 basic functions of a computer)
    • Input
    • Processing
    • Output
    • Storage
    • Example: Report Card
  • Input Devices
    • Any hardware component that allows you to enter data, programs, commands, and user responses into a computer
    • Examples??
  • Processor
    • Also called CPU (Central Processing Unit)
    • Interprets and carries out the basic instructions that operate a computer
    • 2 parts
      • Control unit interprets instructions
      • Arithmetic/logic unit performs arithmetic and logical processes
  • Output Devices
    • Output devices make the information resulting from processing available for use
    • Output Device Examples??
  • Storage Devices
    • Used to store instructions, data, and information when they are not being used in memory
      • Floppy disk
      • Hard disk
      • CD/DVD (ROM, R, RW)
      • Tape
      • Flash drive
  • Memory
    • Also called RAM (Random Access Memory)
    • Temporarily stores instructions waiting to be executed by the processor, data needed by those instructions, and the results of processed data
    • Kilobyte, megabyte, gigabyte
    • Byte = 1 memory location ex. the letter A
  • System Unit Let’s See!! Video Link!!
  • Computer Mobile Devices
    • PDA (personal digital assistant)
    • Notebook computer
    • Smartphone
    • Pocket PC
  • It’s Your Turn! Find a partner.
    • Computers are everywhere. Watching TV, driving a car, using a charge card, ordering fast food, and typing a term paper all involve interactions with computers. Make a list of every computer you and your partner can recall that you encountered over the past week.
    • Create a timeline of at least 10 milestones/major advances in computer technology.
    • Who were some of the major contributors to computer technology (individuals, organizations, corporations)? List at least 4 and describe what they did.
    • How have businesses and our personal lives been affected by computer technology?