Intro to Computers

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Intro to Computers

  1. 1. Essential Introduction to Computers Mrs. Bryant Computer Information Systems
  2. 2. What Is a Computer? <ul><li>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 </li></ul>
  3. 3. 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
  4. 4. What Are the Components of a Computer? <ul><li>Input </li></ul><ul><li>Memory </li></ul><ul><li>Storage </li></ul><ul><li>Processor </li></ul><ul><li>Output </li></ul>I need 3 volunteers! Input Memory Storage Processor Output
  5. 5. Information Processing Cycle (4 basic functions of a computer) <ul><li>Input </li></ul><ul><li>Processing </li></ul><ul><li>Output </li></ul><ul><li>Storage </li></ul><ul><li>Example: Report Card </li></ul>
  6. 6. Input Devices <ul><li>Any hardware component that allows you to enter data, programs, commands, and user responses into a computer </li></ul><ul><li>Examples?? </li></ul>
  7. 7. Processor <ul><li>Also called CPU (Central Processing Unit) </li></ul><ul><li>Interprets and carries out the basic instructions that operate a computer </li></ul><ul><li>2 parts </li></ul><ul><ul><li>Control unit interprets instructions </li></ul></ul><ul><ul><li>Arithmetic/logic unit performs arithmetic and logical processes </li></ul></ul>
  8. 8. Output Devices <ul><li>Output devices make the information resulting from processing available for use </li></ul><ul><li>Output Device Examples?? </li></ul>
  9. 9. Storage Devices <ul><li>Used to store instructions, data, and information when they are not being used in memory </li></ul><ul><ul><li>Floppy disk </li></ul></ul><ul><ul><li>Hard disk </li></ul></ul><ul><ul><li>CD/DVD (ROM, R, RW) </li></ul></ul><ul><ul><li>Tape </li></ul></ul><ul><ul><li>Flash drive </li></ul></ul>
  10. 10. Memory <ul><li>Also called RAM (Random Access Memory) </li></ul><ul><li>Temporarily stores instructions waiting to be executed by the processor, data needed by those instructions, and the results of processed data </li></ul><ul><li>Kilobyte, megabyte, gigabyte </li></ul><ul><li>Byte = 1 memory location ex. the letter A </li></ul>
  11. 11. System Unit Let’s See!! Video Link!!
  12. 12. Computer Mobile Devices <ul><li>PDA (personal digital assistant) </li></ul><ul><li>Notebook computer </li></ul><ul><li>Smartphone </li></ul><ul><li>Pocket PC </li></ul>
  13. 13. It’s Your Turn! Find a partner. <ul><li>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. </li></ul><ul><li>Create a timeline of at least 10 milestones/major advances in computer technology. </li></ul><ul><li>Who were some of the major contributors to computer technology (individuals, organizations, corporations)? List at least 4 and describe what they did. </li></ul><ul><li>How have businesses and our personal lives been affected by computer technology? </li></ul>

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