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Sowers com 1 4 p point presentation

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Sowers com 1 4 p point presentation

  1. 1. COMPUTER SKILLS for the 21 st Century INTRODUCTION TO COMPUTERS Com1-4
  2. 2. Use the words below to write a definition of the word “computer.” <ul><li>Instructions </li></ul><ul><li>Output </li></ul><ul><li>Store </li></ul><ul><li>Electronic </li></ul><ul><li>Machine </li></ul><ul><li>Memory </li></ul><ul><li>Process </li></ul><ul><li>Input </li></ul>
  3. 3. WHAT IS A COMPUTER AND WHAT DOES IT DO? <ul><li>An electronic machine, </li></ul><ul><li>operating under the control of instructions stored in its own memory, </li></ul>
  4. 4. Definition of Computer, continued . . . <ul><li>that can accept data ( input ), </li></ul><ul><li>manipulate data according to specified rules ( process ), </li></ul><ul><li>produce results ( output ), and </li></ul><ul><li>store the results for future use. </li></ul>
  5. 5. WHAT DOES A COMPUTER DO? <ul><li>Information Processing Cycle </li></ul><ul><ul><li>Input </li></ul></ul><ul><ul><li>Process </li></ul></ul><ul><ul><li>Output </li></ul></ul><ul><ul><li>Storage </li></ul></ul>
  6. 6. WHAT DOES A COMPUTER DO? <ul><li>Data : collection of raw facts, figures, and symbols entered into the computer </li></ul>
  7. 7. . . . continued <ul><li>Information : data that is organized and used in a meaningful manner </li></ul>
  8. 8. WHAT MAKES A COMPUTER SO POWERFUL? <ul><li>Speed - how fast info flows along circuits </li></ul><ul><li>Reliability - low failure rates </li></ul><ul><li>Accuracy - generate error free results with accurate data </li></ul><ul><li>( GIGO -Garbage in Garbage out) </li></ul>
  9. 9. . . . continued <ul><li>Storage - can hold enormous amounts of data </li></ul><ul><li>Communications - allow computers to “talk” to each other; sharing data, instructions and information </li></ul>
  10. 10. HOW DOES A COMPUTER KNOW WHAT TO DO? <ul><li>Computer programs </li></ul><ul><ul><li>A series of instructions that tell the hardware of a computer how to perform tasks </li></ul></ul>
  11. 11. COMPUTER SOFTWARE <ul><li>System Software </li></ul><ul><ul><li>contains instructions that coordinate all the activities of hardware devices and run application software </li></ul></ul><ul><ul><ul><li>GUI (Graphical user interface): </li></ul></ul></ul><ul><ul><ul><ul><ul><li>Uses graphical images such as icons </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Microsoft Windows 2000, Windows XP, Vista, Windows 7 </li></ul></ul></ul></ul></ul>
  12. 12. COMPUTER SOFTWARE <ul><li>2. Application Software - programs designed to perform specific tasks for users </li></ul><ul><ul><li>Packaged software : </li></ul></ul><ul><ul><li>meets needs of many users (Office 2007) </li></ul></ul><ul><ul><li>Custom software : </li></ul></ul><ul><ul><li>designed to perform specific functions </li></ul></ul><ul><ul><li>Shareware: </li></ul></ul><ul><ul><li>distributed free for a trial period </li></ul></ul><ul><ul><li>Freeware and public-domain software : </li></ul></ul><ul><ul><li>no cost to users but copyrighted </li></ul></ul>
  13. 13. THE COMPONENTS OF A COMPUTER <ul><li>1. Input Devices </li></ul><ul><ul><li>Keyboard </li></ul></ul><ul><ul><li>Mouse </li></ul></ul><ul><ul><li>Microphone </li></ul></ul>
  14. 14. THE COMPONENTS OF A COMPUTER, continued . . . <ul><li>2. Output Devices </li></ul><ul><ul><li>Monitor </li></ul></ul><ul><ul><li>Printer </li></ul></ul><ul><ul><li>Speakers </li></ul></ul>
  15. 15. THE COMPONENTS OF A COMPUTER, continued . . . <ul><li>3. System Unit </li></ul><ul><ul><li>Box-like case that houses the electronic components of the computer that are used to process data </li></ul></ul><ul><ul><li>CPU (Central Processing Unit) </li></ul></ul>
  16. 16. THE COMPONENTS OF A COMPUTER, continued . . . <ul><li>4. Storage Devices </li></ul><ul><ul><li>Hard Drive (internal/external) </li></ul></ul><ul><ul><li>CD-ROM/drive </li></ul></ul><ul><ul><li>DVD-ROM/drive </li></ul></ul><ul><ul><li>Flash drive (USB) </li></ul></ul>
  17. 17. THE COMPONENTS OF A COMPUTER, continuted . . . <ul><li>5. Communications Devices </li></ul><ul><ul><li>Modem (dial up) </li></ul></ul><ul><ul><li>Cable/FIOS (fiber optic) </li></ul></ul><ul><ul><li>DSL </li></ul></ul><ul><ul><li>High speed wireless </li></ul></ul>
  18. 18. THE COMPONENTS OF A COMPUTER <ul><li>Input Devices </li></ul><ul><li>Output Devices </li></ul><ul><li>System Unit </li></ul><ul><li>Storage Devices </li></ul><ul><li>Communications Devices </li></ul>
  19. 19. THE END!!  <ul><li>Review Next Class </li></ul><ul><li>Study for Test the Following Class </li></ul>

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