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- FX-991CW
High-definition & 4-gradation display
With the 4-gradation display, the current input location is displayed in a darker color.
Intuitive cursor operation
Simple cursor-based operations and a key layout that follows the natural flow of use.
Natural Textbook Display
Intuitive, easy-to-learn icon display
List display function for thorough, speedy learning
High-speed calculation
Fast calculation for smooth performance in class or during examinations.
Packed with features to encourage learning
Calculator Apps
Easily select a calculator app from the Home screen that is suitable for the type of calculation that you want to perform.
*The image is the display of fx-991CW.
Spreadsheet
Useful for learning statistics, recursive formulas, and more.
Handles up to 5 columns x 45 rows (maximum of 170 data items).
Math Box
The following functions to support math learning: Dice Roll and Coin Toss for probability simulations.
*Screen images might differ from the final product.
Calculate
General calculations
Statistics
Statistical and regression calculations
Table
Generates a number table based on one or two functions
Equation
Simultaneous equations, higher-order equations, and Solver (function to find the value of any variable contained in an input equation)
Online visualization service using QR codes
Easily generate QR codes of equations input into the calculator. Graphs and other graphics can be displayed on smartphones or tablets.
1. Input data
2. Generate & scan QR code
3. Graph on smart device
4. Analyze graph
| Feature | Details |
|---|---|
| Product features | Non Programmable, Non Graphing |
| Product type | Non Programmable, Non Graphing |
| Number of digits | 10 + 2 digits |
| Liquid crystal display | Natural textbook display, Icon menu, Dot matrix, High Resolution, 4-gradation display |
| Key characteristics | Plastic keys |
| Key functions | Negative Sign, Power Off |
| Memory | Variables: 9, Variables List, Answer Memory, Function memory, Memory Protection, Reset Function |
| Power supply | Solar & Battery |
| Battery life | Approx. 2 years |
| Auto Power Off | Yes |
| Size (D × W × H) | 162 × 77 × 10.7 mm |
| Weight | 95 g |
| Accessories | Hard Case |
Display format settings
Number Format: Fix
Number Format: Sci
Number Format: Norm
Engineering Symbol
Engineering Notation
Fraction / Decimal Conversion
Angle Unit (Degree, Radian, Gradian)
Improper/Mixed Fraction
Sexagesimal/Decimal Conversion
Digit Separator
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
Ratio calculation
Spreadsheet
Numeric Table
Simultaneous Equation
Polynomial Equation
Inequality Calculations
List based STAT-data editor
1-Variable statistics
2-Variable statistics and regression
Distribution Calculations
Mathbox (Coin Toss, Dice Roll)
Applied calculation
Continuous Calculation
Replay Function
Multi-replay Function
UNDO
SOLVE Function
Basic functions
Basic Mathematical Functions
Independent Key x
Absolute Value Calculation
Square and square root (x2/√)
Power and radical root (xy/x√)
Trigonometric, inverse trigonometric (sin/cos/tan/sin–1/cos–1/tan–1)
Hyperbolic, inverse hyperbolic (sinh/cosh/tanh/sinh–1/cosh–1/tanh–1)
Exponential, logarithmic (log, ln, 10x, ex)
Base specified logarithmic
Coordinate Conversion
Combination / Permutation
Prime Factorization
Random Number Generation
Random Integer Generation
Summation
Differentiation Calculation
Integration calculation
Physics- and chemistry-related functions
Scientific Constants
Metric conversion function
Statistical data
List based STAT-data editor