from the computer. Most computer 
      files are stored on the hard disk. There should also be backup copies stored 
      elsewhere in case the hard disk fails.</td>
  </tr>
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    <td><strong>Hexadecimal </strong></td>
    <td>Base 16 numbers. Count and do arithmetic with 16 symbols. [ 0 1 2 3 4 
      5 6 7 8 9 A B C D E F ] Hexadecimal and Binary are easily converted which 
      is why hexadecimal is used.</td>
  </tr>
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    <td><strong>Hot Keys</strong>