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New Casio fx-991CW Advanced Scientific Calculator

The Casio fx-991 CW is the new upgraded version of the Casio fx-991 EX (Casio’s most advanced scientific calculator), containing additional features, to include a high definition display and improved menu navigation. Approved for Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers. Allowed in every UK exam where a calculator can be used.

The Casio fx-991 CW is Casio’s most advanced scientific calculator with 540 + mathematical functions. The large Natural Textbook Display shows mathematical expressions like roots and fractions as they appear in your textbooks which increases comprehension because results are easier to understand.

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Key Features

  • Casio fx-991 is the UK’s best-selling ‘advanced scientific’ calculator.
  • FX-991 CW is the new upgraded version of the fx-991 EX
  • Allowed in every UK exam where a calculator can be used
  • Approved for Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers
  • Dual powered, solar with battery back up and auto power-off.
  • Clip-on on protective hard cover included
  • 3 year guarantee
  • Large and clear high definition Natural Textbook Display shows mathematical expressions as they appear in textbooks
  • New intuitive key layout and menus, quick and easy to navigate to access more functionality
  • Casio fx-991 CW Casio’s most advanced scientific calculator with 540 + mathematical functions

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Scientific and Statistics

  • Display type: 62 * 192 FULL DOT
  • Natural display, Functions: 540+
  • Algebraic input logic: Natural V.P.A.M.
  • Number of characters/lines: 16/1+10/1
  • Icon menu
  • Significant digits and exponent: 10+2
  • Variable memory: 9
  • Repeat function
  • Basic mathematics
  • Fraction calculations

Functions and Features

  • Powers, roots, reciprocal, logarithms (any base)
  • Equivalent ratio solver, Table of values
  • Equation solver (polynomial, simultaneous linear, numeric)
  • Polynomial inequality solver
  • Angle dimensions DEG,RAD,GRAD
  • Conversions between >DEG-RAD-GRAD
  • Trigonometric functions sin/cos/tan/sin-1/cos-1/tan-1
  • Calculations in the sexagesimal system (hours (or degrees)/minutes/seconds)
  • Probability distributions (Normal, Binomial, Poisson)

Functions and Features

  • Random decimal and integer generator
  • Vector and matrix arithmetic
  • Spreadsheet, Complex numbers
  • Coordinate conversion Polar<>Rectangular
  • Hyperbolic functions sinh/cosh/tanh/sinh-1/cosh-1/tanh-1, Technical notation ENG
  • Calculation with technical symbols
  • Scientific constants: 47,Unit conversions: 40
  • Base-N (hexadecimal/decimal/binary/octal)
  • Logical operators (AND/OR/etc.)