The Casio FX-991CW-W-DH is a premium scientific calculator from the ClassWiz CW Series, designed for secondary school, university, engineering, and science students. It features a Natural Textbook Display, a high-resolution 4-gradation LCD, and an intuitive icon-based interface for easy navigation. With over 540 built-in functions, spreadsheet capability, QR Code generation, advanced calculus, matrices, vectors, and statistical analysis, it delivers powerful performance for academic and professional use. Official specifications are based on Casio's official product documentation.
Key Features
Over 540 built-in functions
Natural Textbook Display
High-resolution 4-gradation dot matrix display
Icon-based menu interface
High-speed calculation
Spreadsheet application
QR Code generation
Matrix calculations
Vector calculations
Complex number calculations
Numerical differentiation
Numerical integration
Equation and inequality solver
Distribution calculations
Math Box (Dice Roll & Coin Toss)
Table function
Prime factorization
Scientific constants
Metric conversions
Slide-on hard protective case
Calculation Functions
Basic Mathematics
Arithmetic calculations
Fraction calculations
Percentage calculations
Powers and roots
Logarithmic and exponential functions
Scientific notation
Engineering notation
Degree, minute, and second calculations
Ratio calculations
Advanced Mathematics
Complex number calculations
Matrix calculations
Vector calculations
Numerical differentiation
Numerical integration
Simultaneous equations
Polynomial equations
Inequality calculations
Base-N calculations
Coordinate conversion (Rectangular ↔ Polar)
Prime factorization
Statistics & Data Analysis
One-variable statistics
Two-variable statistics
Regression analysis
Distribution calculations
List-based statistical editor
Spreadsheet (up to 5 columns × 45 rows)
Additional Features
QR Code generation
Table function
Scientific constants
Metric conversions
Math Box (Dice Roll & Coin Toss)
Replay & Undo functions
Variable list (9 variables)
SOLVE function
Design & Materials
Non-programmable scientific calculator
Non-graphing calculator
Natural Textbook Display
High-resolution 4-gradation LCD
Icon-based user interface
Durable plastic keys
Fast-typing function (2-key rollover)
Protective slide-on hard case
Colors
Body: White
Keys: White with gray and black function keys
Display: High-resolution monochrome LCD
Case: Protective slide-on hard case
Note: The FX-991CW-W-DH is part of Casio's latest ClassWiz CW Series, offering an intuitive icon-based interface, QR Code support, and over 540 built-in functions for advanced mathematics, engineering, and science education.
Power
Power Source: Solar Cell + 1 × LR44 Button Battery
Battery Life: Approximately 2 years (based on 1 hour of use per day)
Automatic Power Off: Yes
Dimensions & Weight
Dimensions (D × W × H): 162 × 77 × 10.7 mm
Weight: Approximately 95 g
Ideal For
Suitable for:
High school students
University students
Engineering
Mathematics
Physics
Chemistry
Statistics
STEM education
Professional scientific calculations
What's Included
Casio FX-991CW-W-DH Scientific Calculator
Slide-on Hard Case
Instruction Manual
Warranty Card (provided by the authorized distributor)
