Casio School & Lab Scientific Calculator FX-991EX

Casio School & Lab Scientific Calculator FX-991EX

Basic Information:

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 (A,B,C.D.E.F.X.Y,M)
  
• 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 Settings:

Display format settings

• Number Format: Fix
  
• Number Format: Sci
  
• Number Format: Norm
  
• Engineering Symbol
  
• Engineering Notation
  
• Toggling Calculation Results
  
• Fraction / Decimal Conversion (SHIFT＋＝)

Calculation Functions:

Basic calculation

• Basic Calculation
  
• Bracket Calculation
  
• Fraction Calculation
  
• Degree, Minute, Second (Sexagesimal) Calculations
  
• Reciprocal Calculation
  
• Percent Calculation (scientific calculator function)
  
• Ratio calculation
  
• Factorial Function
  
• Ï€
  
• Irrational number calculation
  
• 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

Functions Features:

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 Functions:

Statistical data

• List based STAT-data editor

Statistical calculation

• Statistics Function
  
• Basic Statistics
  
• Intermediate Statistics
  
• Advanced Statistics
  
• Distribution Calculations

Exam Compatibility:

Permitted in exams

• GCSE/AS/A Level

Peripheral Devices:

• Connection to peripheral devices
• QR Code