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3.03 in 0.44 in | 3.15 in 0.44 in | |
Available colors | ||
User rating |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Type | Scientific calculator | Scientific calculator |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Colour of product | Black |
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Control type | Buttons | Buttons |
Form factor | ||
Cover | yes | no |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Width | 3.03 in | 3.15 in |
Height | 0.44 in | 0.44 in |
Depth | 6.52 in | 6.38 in |
Weight | 3.17 oz | 3.35 oz |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Number of display lines | 2 | 4 |
Display type | LCD | Dot-matrix |
Display tilting | no | yes |
Second display | no | no |
Display light | no | no |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Data transfer | no | no |
Casio FX-991DE X | Casio FX-991ES Plus | |
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Power source |
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Battery operated | yes | yes |
Battery type | LR44 | LR44 |
Number of batteries required | 1 | 1 |
External power connection |
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Pros | ||
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Cons |