User manual

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1.    /      Contrast   
.
2.    /          



.
1.   SETTINGS,    /     
  .
2.   on/off .
3. on,   /
 

.
1.  / Date/Time Settings 
 .
2.  / 12/24Hr,
Year , Month  Day , Hour , Minute , Second , 
AM/PM 
3.  / .
4.  .