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Casio FX-991ES Plus vs Sharp EL-W506

    3.15 in
    0.44 in
    Casio FX-991ES Plus Calculator
    Casio FX-991ES Plus
      3.15 in
      0.55 in
      Sharp EL-W506 Calculator
      Sharp EL-W506
      Available colors
      User rating
      297
      3.4 out of 5
      297 user ratings
      5 stars
      		22 %
      4 stars
      		19 %
      3 stars
      		36 %
      2 stars
      		16 %
      1 stars
      		5 %
      57
      4.1 out of 5
      57 user ratings
      5 stars
      		49 %
      4 stars
      		19 %
      3 stars
      		22 %
      2 stars
      		7 %
      1 stars
      		1 %

      Full Comparison

      Units:

      Technical details

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      TypeScientific calculatorBasic calculator

      Design

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      Colour of product
      • Grey
      • Violet,White
      • Black
      • Blue
      • Grey
      • Silver

      Dimensions

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      Width3.15 in3.15 in
      Height0.44 in0.55 in
      Depth6.38 in6.61 in
      Weight3.35 oz3.49 oz

      Display

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      Number of characters per line1510
      Number of display lines44

      Connectivity

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      Data transfernono

      Power

      Casio FX-991ES PlusCasio FX-991ES Plus
      Sharp EL-W506Sharp EL-W506
      Battery operatedyesyes
      External power connection
      • Solar cell
      • USB
      • External source
      		Solar cell

      Pros & Cons

      Pros
          Cons

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