Casio FX-991EX ClassWiz Scientific Calculator (Black)

Intuitive, easy-to-learn icon display
The use of icons on the menu screen improves viewability. Selection of the desired function is quick and easy.

Natural Textbook Display
Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks.

List display function for thorough, speedy learning
Variables and statistical calculation results stored in memory can be displayed in lists. There’s no need to recall and confirm individual values as with previous models.

Easy-to-understand English messages and interactive format
Nearly all English words are displayed on the screen in unabbreviated form. Interactive menu display realizes more intuitive operation.

High computational competence for performing even advanced mathematics
ClassWiz contains calculation functions that support even advanced mathematical operations, including spreadsheet calculations, 4 × 4 matrix calculations, calculation of simultaneous equations with four unknowns and quartic equations, and advanced statistical distribution calculations.

Online Visualization Service Using QR Code
Generate QR codes of equations input into the calculator by a simple operation. Graphs and other graphics can be displayed on smartphone or tablet screens.

A comprehensive set of advanced functions unique to CASIO scientific calculators: -
- Spreadsheet calculations: Useful for learning statistics. Up to 5 columns × 45 rows (maximum of 170 data items)
- Matrix calculations: Perform calculations with matrices of up to 4 rows and 4 columns.
- Vector calculations: Perform calculations using up to four third-order vectors stored in memory.
- Multiline display: Formulas are automatically wrapped to multiple lines. * *In linear input mode
- Integration calculations: Perform integration calculations in advanced mathematics.
- Differential calculations: Perform differential calculations in advanced mathematics.
- Equation calculations: Calculation of simultaneous equations in 2 to 4 unknowns and high-degree equations of second to fourth degree
- Inequality calculations: Solve second-degree to fourth-degree inequalities.
- Advanced statistical distribution calculations: Perform calculations involving normal distributions, binomial distributions, and Poisson distributions.
- Ratio calculations: Perform ratio calculations such as A:B=X:D.
- Metric conversions: Select units from the Metric Conversion Command List.
- Scientific constants: Select scientific constants from the Scientific Constant Table.
- Variables list: One-touch list display
- Statistics list: Displays six rows at once.
- Digit separator: Separation every three digits makes even large numbers easy to read.
- Engineering symbols: Perform engineering calculations that include symbols such as k, M, m, and n.

General

Brand:	Casio
Series:	FX-991EX
Package Dimensions:	192 x 85 x 31mm (L x W x T)
Categories:	Promotions Stationery > Desk Supplies > Calculators > Scientific Calculators Electronics > Gadgets > Calculators > Scientific Calculators
LSN:	XDK-BML-N7D-1
Barcode:	4549526605895
Colour:	Black
Model Number:	FX-991EX-W
Type:	Calculator

Warranty

Warranty:

1 Year Limited

Function

Business and Financial Features:	Spreadsheet • Equation • Inequality Calculations
Calculator Type:	Scientific
Mathematical Functions:	Basic Mathematical Functions • Number of Functions : 552 • Independent Key x • Absolute Value Calculation • Power Function (Square) • Power Function (Cube) • Power Function • Power Function (Square Root) • Trigonometric Function • Inverse Trigonometric Function • Hyperbolic • Inverse Hyperbolic Function • Exponential Calculation • Logarithmic Calculation • Log not base 10 • Coordinate Conversion • Combination / Permutation • Prime Factorization • Random Number Generation • Random Integer Generation • Summation
Mode Selection:	Number Format: Fix • Number Format: Sci • Number Format: Norm • Engineering Symbol • Engineering Notation • Toggling Calculation Results • Fraction / Decimal Conversion (SHIFT＋＝)
Scientific Functions:	Scientific Constants • Metric conversion function
Statistical Functions:	Statistics Function • Basic Statistics • Intermediate Statistics • Advanced Statistics • Distribution Calculations

Display

Display Characters:	10 + 2 digits
Display Lines:	3-digit comma markers • Natural textbook display • Icon menu • Dot matrix display • High Resolution

Power

Power Source:

Solar & Battery

Physical Specification

Item Depth (mm):	165
Item Height (mm):	11
Item Width (mm):	77
Weight (kg):	0.09

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• Product features: Non Programmable | Non Graphing | Number of Functions : 552
• Product type: Non Programmable | Non Graphing
• Number of digits: 10 + 2 digits
• Liquid crystal display: 3-digit comma markers | Natural textbook display | Icon menu | Dot matrix display | High Resolution
• Key characteristics: Plastic keys
• Key functions: Negative Sign | Power Off
• Memory: Variables: 9 | Variables List | Independent Memory (M / M+ / M-) | Answer Memory | Memory Protection | Reset Function
• Power supply: Solar & Battery | Approximate battery life Main 2 years | Auto Power Off
• Accessories: Hard Case
• Display format settings: Number Format: Fix | Number Format: Sci | Number Format: Norm | Engineering Symbol | Engineering Notation | Toggling Calculation Results | Fraction / Decimal Conversion (SHIFT＋＝)
• Basic calculation: Basic Calculation | Bracket Calculation | Fraction Calculation | Degree, Minute, Secound (Sexagesimal) Calculations | Reciprocal Calculation | Percent Calculation (scientific calculator function) | Ratio calculation | Factorial Function | π | Calculation with √ and π | Rounding Function
• Advanced calculation: Transcendental number: e | Base-n calculation | Logical Operators | Complex number calculation | Matrix calculations | Vector calculations | Differential calculation | Integration calculation
• Applied calculation: Multi-statement Command (:) | Continuous Calculation | Replay Function | Multi-replay Function | UNDO | CALC Function | SOLVE Function
• Basic functions: Basic Mathematical Functions | Number of Functions : 552 | Independent Key x | Absolute Value Calculation | Power Function (Square) |Power Function (Cube) | Power Function | Power Function (Square Root) | Trigonometric Function | Inverse Trigonometric Function | Hyperbolic | Inverse Hyperbolic Function | Exponential Calculation | Logarithmic Calculation | Log not base 10 | Coordinate Conversion | Combination / Permutation | Prime Factorization | Random Number Generation | Random Integer Generation | Summation
• Other functions: Spreadsheet | Equation | Inequality Calculations
• Physics- and chemistry-related functions: Scientific Constants | Metric conversion function
• Statistical data: List based STAT-data editor
• Statistical calculation: Statistics Function | Basic Statistics | Intermediate Statistics | Advanced Statistics | Distribution Calculations
• Permitted in exams: GCSE/AS/A Level
• Connection to peripheral devices: QR Code

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