Casio fx-991CW Scientific Calculator

Feature :

• Variables list
• 9 variables
• Prime factorization
• Random integers
• Coordinate transformation
• Power calculation
• Trigonometry
• Fraction calculations
• Combination and permutation
• Statistics (list-based STAT data editor standard deviation, regression analysis, statistics list)
• Table function
• UNDO
• Digit Separator Multiline display
• QR Codes

Additional functions

• Spreadsheet calculations
• Integration calculations
• Differential calculations
• Solver function
• Complex number calculations
• Base-N calculations
• Equation calculations
• Matrix calculation
• Vector calculations
• Scientific constants
• Metric conversions
• Advanced statistical distributional calculations
• Inequality calculations
• Ratio calculations
• Engineering symbol calculations

Specifications

• Power supply: Solar & battery (LR44 x 1)
• Approximate battery life: 2years*(LR44 x 1)
• Dimensions H x W x D(mm): 10.7 x 77 x 162
• Approximate weight(g): 95
• Case style: Hard protective cover
• Dot matrix display: 192 x 63 dots
• Mantissa + exponent digits: 10+2
• Internal operation digits: 23

Intuitive, approachable new design

• High-definition & 4-gradation display
• Intuitive cursor operation
• Key shape designed for accurate entry
• Simple key layout and labeling
• Natural textbook display
• Intuitive, easy-to-learn icon display
• List display function for thorough, speedy learning
• High-speed calculations
• Online visualization service using QR codes