Casio® FX-991EX Advanced Scientific Calculator, 15-Digit LCD

Item # CSOFX991EX

  • Fully-featured with 417 built-in functions.
  • Natural textbook display shows formula and results exactly as they appear in the textbook.
  • Improved math functionality with standard deviation, multi-replay function, logarithm log and list-based STAT data editor.
  • Fraction calculation.
  • 40 metric conversions/40 scientific constants.
  • Comes with slide-on hard case.
Manufacturers Item #FX991EX
  • Description
  • Specifications
  • Resources
  • Companion

The perfect choice for both high school and college students with 417 built-in functions. Natural textbook display shows formula and results exactly as they appear in the textbook. Improved math functionality with standard deviation, multi-replay function, logarithm log and list-based STAT data editor.

Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 15; Display Characters x Display Lines: 16 x 2.

  • Global Product Type Calculators-Scientific
  • Power Source(s) Battery; Solar
  • Display Notation Numeric
  • Number of Display Digits 15
  • Display Characters x Display Lines 16 x 2
  • Memory Independent
  • Display Type(s) LCD
  • Case Slide-On
  • Display Angle Fixed
  • Percent Key(s) Yes
  • Fraction Calculations Yes
  • Fraction/Decimal Conversions Yes
  • Decimal Function Yes
  • +/- Switch Key No
  • Currency Exchange Function No
  • Metric Conversion Yes
  • Backspace Key Yes
  • Double Zero Key No
  • Amortization No
  • Base Number Calculations Yes
  • Bond Calculations No
  • Cash Flow Calculations No
  • Complex Number Calculations Yes
  • Confidence Interval Calculating No
  • Cost/Sell/Margin No
  • Date Calculations No
  • Depreciation Calculations No
  • Display Window Resolution 62 x 192 Full Dot
  • Entry Logic Logical Operators
  • Equation Editor Yes
  • Grand Total Key No
  • Graphing Functions No
  • Higher Mathematical Functions Basic; Constant; Fraction; Percentage; Scientific; Statistics
  • Hyperbolic Functions Yes
  • Hypothesis Testing No
  • Interest Rate Conversion No
  • Item Count Function No
  • Linear Regression Yes
  • Loan Calculation No
  • Logical (Boolean) Operations Yes
  • Markup/Down Key Yes
  • Matrices Yes
  • Percent Add-On/Discount No
  • Polar-Rectangular Conversion Yes
  • Probability (Random Number) Yes
  • Programming Steps Yes
  • Simultaneous Equations Yes
  • Square Root Key Yes
  • Tax Calculation No
  • Time-Value-of-Money No
  • Time/Date No
  • Trig/Log Functions Yes
  • Variable Regression Yes
  • Variable Statistics Yes
  • Size 3 x 6.5"
  • Replacement Batteries LR44
  • Pre-Consumer Recycled Content Percent 0%
  • Post-Consumer Recycled Content Percent 0%
  • Total Recycled Content Percent 0%