Variables: 9 (A,B,C.D.E.F.X.Y,M)Independent Memory (M / M+ / M-)Answer MemoryMemory ProtectionReset Function
Casio Calculator fx-991ES PLUS
Product features
Non ProgrammableNon GraphingNumber of Functions : 417Product type
Non ProgrammableNon GraphingNumber of digits
10 + 2 digitsLiquid crystal display
Natural textbook displayDot matrix displayKey characteristics
Plastic keysKey functions
Negative SignPower OffMemory
Variables: 9 (A,B,C.D.E.F.X.Y,M)Independent Memory (M / M+ / M-)Answer MemoryMemory ProtectionReset FunctionPower supply
Solar & BatteryApproximate battery life Main 3 yearsAuto Power OffSize (D × W × H)
161.5 × 77 × 11.1 mmWeight
95 gAccessories
Hard Case
Display format settings
Number Format: FixNumber Format: SciNumber Format: NormEngineering NotationToggling Calculation Results
Basic calculation
Basic CalculationBracket CalculationFraction CalculationDegree, Minute, Secound (Sexagesimal) CalculationsReciprocal CalculationPercent Calculation (scientific calculator function)Factorial FunctionπIrrational number calcuationRounding FunctionAdvanced calculation
Transcendental number: eBase-n calculationLogical OperatorsComplex number calculationMatrix calculationsVector calculationsDifferential calculationIntegration calculationApplied calculation
Multi-statement Command (:)Continuous CalculationReplay FunctionMulti-replay FunctionCALC FunctionSOLVE Function
Basic functions
Basic Mathematical FunctionsNumber of Functions : 417Absolute Value CalculationPower Function (Square)Power Function (Cube)Power FunctionPower Function (Square Root)Trigonometric FunctionInverse Trigonometric FunctionHyperbolic / Inverse Hyperbolic FunctionExponential CalculationLogarithmic CalculationLog not base 10Coordinate ConversionCombination / PermutationRandom Number GenerationRandom Integer GenerationSummationOther functions
EquationPhysics- and chemistry-related functions
Scientific ConstantsMetric conversion function
Statistical data
List based STAT-data editorStatistical calculation
Statistics FunctionBasic Statistics
.