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Computer Hardware 1


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Computer Hardware 1

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