Windows 8.1 - User's Guide

   
    .
   
 
   
          .
.        :
   
  
    )   .(
.     
  :
   
  
    )
   .(
      
           :
              
 .        .

.          
  Settings) .(
.   Screen)  (   .       
   

     .      
 
 .       
   .
    
  :
.             Settings) .(
.   Screen)  (   .       .
:   Windows 
    Power Meter)   (
          Adjust screen brightness)  
 (     Screen brightness)   ( .
    