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Casio fx-991ES PLUS User Manual

Casio fx-991ES PLUS
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Before Using the Calculator
About this Manual
In no event shall CASIO Computer Co., Ltd. be liable to anyone for
special, collateral, incidental, or consequential damages in connection
with or arising out of the purchase or use of this product and items that
come with it.
Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of
any kind whatsoever by any other party arising out of the use of this
product and the items that come with it.
Unless specifically stated, all sample operations in this manual assume
that the calculator is in its initial default setup. Use the procedure under
"Initializing the Calculator" to return the calculator to its initial default
setup.
The contents of this manual are subject to change without notice.
The displays and illustrations (such as key markings) shown in this
manual are for illustrative purposes only, and may differ somewhat from
the actual items they represent.
QR Code is a registered trademark of DENSO WAVE INCORPORATED
in Japan and in other countries.
Company and product names used in this manual may be registered
trademarks or trademarks of their respective owners.
Initializing the Calculator
Perform the following procedure when you want to initialize the calculator
and return the calculation mode and setup to their initial default settings.
Note that this operation also clears all data currently in calculator memory.
(CLR) (All) (Yes)
Precautions
Be sure to read the following safety precautions before using the
calculator.
Safety Precautions
Battery
Keep batteries out of the reach of small children.
4

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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