(3) Graph (TREND & HISTORY: F1 à F1 screen) 
  1) Introduction 
-. Provide information of a selected item in a STACK 
-. Display graphs of current status of an item and measuring data have been stored 
in a STACK.   
  2) Screen 
①  Name of Window: “  [TREND & HISTORY]”  is the current window’ s name. 
 
②  Display  Code  /  STACK:  “ COMPANY:  0001  STACK:01”   tells  company 
management code and STACK information. 
③  Measuring item Tap: 10 taps are classified according to subject items. 
 
④  Measuring item information: provide information of selected STACK item. 
 
⑤  HISTORY GRAPH: it displays weekly/hourly-measuring  data of  selected  item in 
the past time. 
 
⑥  REAL-TIME  TREND: it  displays  current  measuring  data  per  second  of  selected 
item.   
 
 
[Picture 5]