Different kinds of calculator quality inspection:
Office Calculator
solar calculator
Financial Calculator
Promotional Gift Calculator
Multifuction Calculator
Check & Correct Calculator
Foldable Calculator
Pocket Calculator
Scientific Calculator
Desktop Calculator
Tax Calculator
8 digit calculator
Some common factors for calculator quality control:

Appearance inspection:

  1. To check top and bottom shell, screen printing, Silkprint, buttons, color, etc.
  2. There is no burst, scratches, dirt, different color in top and bottom shell, there is no 
bad silkprinting, missing screw,wrong positioned buttons of pocket
Function inspection

  1. Check the button of On/OFF, press this button more than 5 times when press ON/CE, the display is 0, 
  2. to check whether there is “INT”, whether there is phenomenon of stuck when press and bad hand feeling.
  3.  Check calculation procedure
Check the function, tapping machine, check whether the presence of display, dark, lack of drawing, add painting, 
such as INT non-conforming.Check each botton, whether there is any INT phenomenon,there is stuck phenomenon , 
to check whether there is wrong positioned buttons of pocket
Press“410÷ 369%”DISPLAY:111111.11   
Press“×8×” DISPLAY :    888888.88    
Press“=” DISPLAY :    E7901.2344   
Press“ON/CE” DISPLAY :    7901.2344   
Press“      ” DISPLAY :    88.888887    
Press“M+” DISPLAY :    M88.888887    
Press“7+5-2M-” DISPLAY :    M     10    
Press“MRC-” DISPLAY :    M 78.888887  
Press“ON/CE” DISPLAY:     M   0  , then press“OFF”,the inspection is finished

calculator inspection:office/solar/digit/Scientific calculator quality control

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