>These jumps either take place or not depending on the flags in the status 
      register. See JS, JNS, JO, JNO, JZ, JNZ, JMP.</td>
  </tr>
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    <td><strong>Control Key </strong></td>
    <td>This is used to give keys special meanings. For example the combination 
      of the control key with the F4 function key will close a window in some 
      software packages.</td>
  </tr>
  <tr valign="top"> 
    <td><strong>Control Systems </strong></td>
    <td>Industrial and domesti