                    (  )

              :

--------------------------------
|   ()|
|                              |
--------------------------------

           "Enter",      ,
        "Enter"
   .       
"Enter",          
     .     
    ,    
.

-------------------------------------------------------------        
|......                                               |
|.......                                               |
|........                                               |
|..                                               |
-------------------------------------------------------------


F1  F2/+  F3   F4 ..F5 .. F10 

        
               ,  
,  .     
 ,      .
    .
              
  F2   "+",  
      .
       
  .
	    ,   
 F2    :

-------------------------------------
|     N |
|                                   |
-------------------------------------

	       .
	1      ,    
  Enter.
	2      .  
     Enter     
    .     
       
     Enter.     
,      
    ,          .
	3    +     
   ,    Enter.
        
      
  .     
    .    , 
        
F4      .
	       
  ,      
 ( F5)    .   
   ,      
    ,  Enter.

           F3       
  .

         F4    
   10 ,     
 .

         F5    
    .   
    . :

1.1998
2.1998
3.1998

              
    1998 .    ,
        
 .       
.        
      .

