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Computer Basic Definitions


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Computer Basic Definitions

  1. 1. Computer : Basic Definitions
  2. 2. Computer <ul><li>A computer is a machine that performs four basic operations: input, processing, output and storage. </li></ul><ul><li>These four operations are called the information-processing cycle. </li></ul>
  3. 3. Information-processing cycle. PROCESSING OUTPUT STORAGE INPUT
  4. 4. Input <ul><li>Devices that enable you to enter data </li></ul><ul><li>into the computer for processing. </li></ul><ul><li>Examples: mouse and keyboard </li></ul>
  5. 5. Processing <ul><li>Computers transform data into </li></ul><ul><li>information. </li></ul><ul><li>Information is data that have been </li></ul><ul><li>simplified and organized in a way that </li></ul><ul><li>people can use. </li></ul><ul><li>Example: CPU </li></ul>
  6. 6. Output <ul><li>Computer provides the results of the </li></ul><ul><li>processing operation in a way that </li></ul><ul><li>people can understand. </li></ul>
  7. 7. Storage <ul><li>Save the result of processing to be </li></ul><ul><li>used again later. Storage devices </li></ul><ul><li>hold all of the programs and data that </li></ul><ul><li>the computer system uses. </li></ul><ul><li>Examples: floppy disk and hard disk </li></ul>