Casio ClassWiz FX-991 SP CW/ White Scientific Calculator

fx-991 SP CW Standard Scientific Calculators

New intuitive and accessible design

High definition screen and four gradations

With the four gradation display, the current input position is displayed in a darker color.

Intuitive cursor operation

Simple slider operation and a key layout that follows the natural flow of use.

Natural textbook presentation

Intuitive and easy to learn icon display

Function list display for complete and quick learning

high speed calculations

Quick calculation for good performance in class or during exams.

Includes features to encourage learning

calculator apps

Easily select a calculator app on the home screen that is suitable for the type of calculation you want to perform.

Spreadsheet

Useful for learning statistics, recursive sequences, and more.

Handles up to 5 columns x 45 rows (with a maximum of 170 data elements).

math chart

• The following features support math learning: Dice and coin toss, number line and circles
• Calculate: General Calculations
• Statistics: Statistical and Regression Calculations
• Table: Generates a number table based on one or two functions
• Equation: Simultaneous Equations, Higher Order Equations, and Solve (function to find the value of any variable contained in an equation input)

Online viewing service through the use of QR codes

Easily generate equation input QR codes in the calculator. Charts and other graphic elements can be viewed on smartphones or tablets.

Various functions available in apps

CATALOGUE

In the CATALOG menu, Store values are displayed for different categories of commands, functions, and symbols depending on the calculator application you are currently using and its current state (the displayed screen or current settings).

FUNCTION

You can store functions in both f(x) memory and g(x) memory.

Examples:

• Create a table in the Table app
• Use the Call function from a spreadsheet

VARIABLES

• You can store data in variables and use the variables in calculations.
• Things you can do with the Variables key
• Show the variable list screen
• Store data in variables
• Use saved data (can be called from any app)

Specifications

• Basic information
• Product characteristics
• not programmable
• No chart creation
• kind of product
• not programmable
• No chart creation
• number of digits
• 10 + 2 digits
• LCD
• Natural textbook presentation
• icon menu
• dot matrix display
• High resolution
• Four gradation display
• key features
• plastic keys
• key features
• Negative sign
• Off
• Memory
• Variables: 9
• variable list
• answer memory
• memorize previous answer
• function memory
• memory protection
• reset function
• Power supply
• solar and battery
• Approximate main battery life: 2 years
• Auto power off
• Size (D × W × H)
• 162×77×10.7mm
• Weight
• 95g
• Accessories
• hard case
• Screen settings
• Display format settings
• Number Format: Fixed
• Number Format: Scientific
• Number format: Normal
• Engineering symbol
• engineering notation
• Fraction/Decimal Conversion
• Angular unit (degree, radian, gradian)
• wrong/mixed fraction
• Sexagesimal/decimal conversion
• digit separator
• calculation functions
• basic calculation
• basic calculation
• bracket calculation
• fractional calculation
• remainder calculation
• Degrees, minutes and seconds (sexagesimal) calculations
• reciprocal calculation
• Percentage calculation (scientific calculator function)
• ratio calculation
• factorial function
• π
• Calculation with √ and π
• rounding function
• advanced calculation
• transcendental number: e
• Calculations with base n numbers
• logical operations
• Calculation of complex numbers
• matrix calculations
• vector calculations
• ratio calculation
• Spreadsheet
• number table
• simultaneous equation
• polynomial equation
• Inequalities Calculations
• List-based STAT data editor
• One Variable Statistics
• Statistics and regression of two variables
• distribution calculations
• Math Box (coin and dice toss)
• Mathematical box (line, unit circle)
• check
• applied calculation
• continuous calculation
• snooze function
• Multiplay function
• UNDO
• SOLVE function
• Feature Features
• Basic functions
• basic math functions
• independent key x
• Absolute value calculation
• Squared and square root (x2/√)
• Power and radical root (xy/x√)
• Trigonometric, inverse trigonometric (sin/cosin/tang/sin–1/cosin–1/tang–1)
• Hyperbolic, inverse hyperbolic (sinh/cosh/tanh/sinh-1/cosh-1/tanh-1)
• Exponential, logarithmic (log, ln, 10x, ex)
• Logarithmic with specific base
• coordinate conversion
• combination/permutation
• GCD/LCM
• Factorization of prime numbers
• Random Number Generation
• Random Integer Generation
• Addition
• Simplify
• Diferential calculus
• Integration calculations
• Functions related to physics and chemistry
• scientific constants
• metric conversion function
• peripheral devices
• Connection to peripheral devices
• QR Code
• authenticity check