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Compare 5 products

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Casio FX-991DE Plus Calculator
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Casio FX-991DE X Calculator
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Casio FX-991ES Plus Calculator
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Casio FX-991EX Calculator
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Olympia CPD 5212 Calculator
Available colors

Technical details

TypeScientific calculatorScientific calculatorScientific calculatorScientific calculatorPrinting calculator

Design

Colour of product
  • Grey
  • Silver
Black
  • Grey
  • Violet,White
  • Black
  • Black,White
White
Control typeButtonsButtonsButtonsButtonsButtons
Form factorPocketPocketPocketPocketDesktop
Coveryesyesnonono
Digit comma separator
N/A
N/A
yesyes
N/A

Dimensions

Width3.15 in3.03 in3.15 in3.03 in8.66 in
Height6.38 in0.44 in0.44 in0.44 in3.54 in
Depth0.44 in6.52 in6.38 in6.52 in11.42 in
Weight3.35 oz3.17 oz3.35 oz3.17 oz56.44 oz

Display

Number of characters per line12
N/A
151612
Display typeDot-matrixLCDDot-matrixLCD
N/A
Display tiltingnonoyesnono
Second displaynonononono
Display lightyesnononoyes
Number of display lines
N/A
2421

Power

Power source
  • Solar
  • Battery
  • Solar
  • Battery
  • Solar
  • Battery
  • Solar
  • Battery
N/A
Battery operatedyesyesyesyes
N/A
Auto power offyes
N/A
yes
N/A
N/A
Number of batteries required1111
N/A
External power connectionSolar cell
  • External source
  • Solar cell
  • Solar cell
  • USB
  • External source
  • Solar cell
  • External source
External source
Battery type
N/A
LR44LR44LR44
N/A

Often compared with Casio FX-991DE Plus

Often compared with Casio FX-991DE X

Often compared with Casio FX-991ES Plus

Often compared with Casio FX-991EX