Casio FX-991ES Plus 2nd edition Calculator Scientific 12 Digits in Black Color
Calculators

Casio FX-991ES Plus 2nd edition Calculator Scientific 12 Digits in Black Color Code: 22403487

Key features:

  • FULL DOT 2-line display
  • 40 scientific constants
  • 20 metric conversions
  • 9 variable memories
  • 24 levels of parentheses
  • Fraction calculations
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-5% for this purchase
Expiration: 01/08/2024

34,00 €

32,30€
DeliveryWed, 31 Jul - Fri, 02 Aug
+14,00 €shipping cost - sent from Greece

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Description

  • Power: Batteries: Solar + 1 x LR44 battery / Auto Power Off
  • Number of rows: 2
  • Repeat function
  • 40 scientific constants
  • 20 metric system conversions
  • 9 variable memories
  • Calculation and problem-solving programs
  • 24 levels of parentheses
  • Operations with fractions
  • Binary, octal, decimal, hexadecimal system conversions/calculations
  • Algebraic logic (AND/OR/...)
  • Measurement of angles in DEG/RAD/GRAD
  • Conversion between > DEG/>RAD/>GRAD
  • Conversion between polar and rectangular coordinates (Pol↔Rec)
  • Trigonometric calculations dd/syn/eq/eq-¹ /syn-¹/eq-¹
  • Hyperbolic functions hmh/synh/effh/effh-¹ /synh-¹/effh-¹
  • Exponential and logarithmic functions, ln, 10x, ex
  • Mathematical calculations, √,x²,x³,x³,x!,xy, x1/y
  • Calculations of percentages (%)
  • Engineering symbols ENG/ENG
  • Random number calculations
  • Statistical calculations
  • Calculations of sums Σ (Σx,Σx², x )
  • Calculations of sums Σx, Σy,Σx²,Sy²,Σxy, x, y
  • Calculations with integrals/differences
  • Transposition (nPr), Combination (nCr)
  • Matrix calculations
  • Dimensions: 16.2x8 cm

Screen

  • FULL DOT 2-line display
  • 15 digits on the top line and 10+2 digits on the bottom
  • Replay function
  • 417 functions
  • 40 scientific constants
  • 20 metric conversions
  • 9 variable memories
  • Dual power: Solar / 1 x LR44 / Auto power off

Calculation and Problem-Solving Programs

  • 24 levels of parentheses
  • Fraction calculations
  • Binary, octal, decimal, hexadecimal conversions/calculations
  • Algebraic logic
  • Angle measurement in DEG/RAD/GRAD
  • Conversion between > DEG/>RAD/>GRAD
  • Conversion between polar and rectangular coordinates (Pol#Rec)
  • Trigonometric calculations
  • Hyperbolic functions
  • Exponential and logarithmic functions, ln, 10x, ex
  • Mathematical calculations, #,x²,x³,x!,xy, x1/y
  • Percentage (%) calculations
  • Engineering symbols ENG/ENG

Calculations

  • Random number calculations
  • Statistical calculations
  • Sum calculations Σ (Σx, Σx², x)
  • Sum calculations Σx, Σy, Σx², Sy², Σxy, x, y
  • Integral/Differential calculations
  • Permutation (nPr), Combination (nCr)
  • Visually perfect algebraic logic (Natural-V.P.A.M.)
  • Matrix calculations

Technical Specifications

  • Weight: 95gr
  • Dimensions: 77x161.5x11x1cm
  • 12 digits

Manufacturer

Casio

Specifications

Type
Scientific
Power Source
Solar/Battery
Lines
2
Display Digits
12
Pocket
No
Colour
Black

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews

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Reviews by our members

  • mpouliozk
    5
    2 out of 2 members found this review helpful

    Verified purchase

    Excellent for students of the exact sciences. It performs matrix operations, solves linear systems, equations, and inequalities.

    Translated from Greek ·
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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  • Andreas_Papadamou
    5
    1 out of 2 members found this review helpful

    Verified purchase

    Excellent calculator. With all the basic functions, suitable for middle school and high school students as well as later on.
    Easy to use and understandable.

    Translated from Greek ·
    • Construction quality
    • Screen clarity
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    • Reliability of results
    • Battery life
    • Value for money
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  • GiannisNakas
    5
    2 out of 2 members found this review helpful

    Verified purchase

    I bought it for my school and I didn't regret the money for a single minute. It can handle very difficult calculations, from mathematics to physics, and its battery is flawless.

    Translated from Greek ·
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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  • nbampaliaris
    5
    9 out of 9 members found this review helpful

    Verified purchase

    Very good! It even solves integrals! It saved my hands during the unacceptable remote exam where I had to solve 4 problems of infinite calculus in 1 hour...

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  • David_Akoda
    5
    2 out of 6 members found this review helpful

    Verified purchase

    A very good computer that is worth its money, it does its job very well and with a very nice color.

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  • Costas_Papapanos
    4
    7 out of 7 members found this review helpful

    Excellent for its price! The second best among the non-programmable calculators on the market. (the first one being the 991EX).

    P.S. Crazy market fact: This version (the second one) is 10 euros cheaper than the first one!!!

    Translated from Greek ·
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  • Verified purchase

    Excellent calculator for complex calculations.

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  • Verified purchase

    Very good for university use. I highly recommend it.

    Translated from Greek ·
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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  • Many possibilities.
    Quite good construction

    Translated from Greek ·
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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  • A little expensive but very good

    Translated from Greek ·
    • Construction quality
    • Calculation Speed
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  • Verified purchase

    Nice little computer at a very good price.

    Translated from Greek ·
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    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Value for money
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  • Verified purchase

    Excellent little computer. Sufficient uses for its price.

    Translated from Greek ·
    • Construction quality
    • Screen clarity
    • Reliability of results
    • Battery life
    • Value for money
    • Calculation Speed
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  • 5
    3 out of 4 members found this review helpful

    Verified purchase

    With this little computer, you can and will manage to pass the SE exams!

    Translated from Greek ·
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    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
  • Verified purchase

  • Verified purchase

  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
  • Verified purchase

  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
  • Verified purchase

    • Construction quality
    • Calculation Speed
    • Battery life
    • Value for money
    • Screen clarity
    • Reliability of results
  • Verified purchase

    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Construction quality
    • Value for money
  • Verified purchase

    • Construction quality
    • Screen clarity
    • Calculation Speed
    • Reliability of results
    • Battery life
    • Value for money
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