<<<<<< TIME POSE SUBROUTINE >>>>>>>>>

PAUSE

If they want to quit, do so

    <<<<<< 4 BOTTOM LINES CLEANING SUBROUTINE >>>>>>

HILINE

GO

 The services of certain operating

 system functions are required many

 times each second.

 Under UNIX these functions are always 

 kept in the primary memory.  This 

 resident portion of the memory is 

 called the UNIX kernel.

                                    KERNEL    

 Most operating system functions are

 needed only occasionally.  These

 include UNIX commands, utilities,

 and most user written programs.

 These are kept on the disk (secondary

 storage) and are invoked only when 

 demanded by the user.

                          ----------------------------

                          |           UNIX           |

                          |                          |

                          |         KERNEL           |

                          |                          |

                          |                          |

                          |   Commands | Utilities   |

                          ----------------------------