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Casio fx-991ES PLUS User Manual

Casio fx-991ES PLUS
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Calculation Modes and
Calculator Setup
Calculation Mode
Before starting a calculation, you must first enter the correct mode as
indicated in the table below.
When you want to perform this type of
operation:
Perform this key
operation:
General calculations (COMP)
Complex number calculations (CMPLX)
Statistical and regression calculations (STAT)
Calculations involving specific number
systems (binary, octal, decimal, hexadecimal)
(BASE-N)
Equation solution (EQN)
Matrix calculations (MATRIX)
Generation of a numerical table based on an
expression
(TABLE)
Vector calculations (VECTOR)
Note
The initial default calculation mode is the COMP Mode.
Configuring the Calculator Setup
Pressing
(SETUP) displays the setup menu, which you can use to
control how the calculations are executed and displayed. The setup menu
has two screens, which you can jump between using and .
10

Table of Contents

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Casio fx-991ES PLUS Specifications

General IconGeneral
TypeScientific
CoverNo
Form factorDesktop
Control typeButtons
Product colorGray
Digits15 digits
Display typeDot-matrix
Display resolution96 x 31 pixels
Display number of lines10 lines
Storage media typeNot available
Battery life3 year(s)
Battery typeLR44
Power sourceBattery/Solar
Number of batteries supported1
Symbolic notationSquare root
Conversion betweenDecimal, Fraction, Percent
Convert angles from degrees toGradian, Radian
Random number/integer generatorYes
Weight and Dimensions IconWeight and Dimensions
Depth162 mm
Width80 mm
Height11.1 mm
Weight95 g

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