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User's Guide

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CASIO Europe GmbH
Bornbarch 10, 22848 Norderstedt, Germany

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About this Manual
· The
MATH mark indicates an example that uses Math format,
while the
LINE mark indicates Linear format. For details about
input/output formats, see "Specifying the Input/Output Format".
·Keycap markings indicate what a key inputs or what function it
Example: 1, 2, +, -,
!, A, etc.
·Pressing the 1 or S key followed by a second key performs
the alternate function of the second key. The alternate function is
indicated by the text printed above the key.
· The following shows what the different colors of the alternate
function key text mean.
If key marking
It means this:
text is this color:
Press 1 and then the key to access
the applicable function.
Press S and then the key to input the
applicable variable, constant, or symbol.
·The following shows an example of how an alternate function
operation is represented in this User's Guide.
Example: 1
Indicates the function that is accessed by the key
operation (1
s) before it. Note that this is not part
of the actual key operation you perform.
· The following shows an example of how a key operation to select
an on-screen menu item is represented in this User's Guide.
Example: 1(Setup)
Indicates the menu item that is selected by the number
key operation (1) before it. Note that this is not part
of the actual key operation you perform.
Keycap function
Alternate function

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The cursor key is marked with four arrows,
indicating direction, as shown in the
illustration nearby. In this User's Guide, cursor
key operation is indicated as
f, c, d,
· The displays and illustrations (such as key markings) shown in
this User's Guide and the separate Appendix are for illustrative
purposes only, and may differ somewhat from the actual items
they represent.
· The contents of this manual are subject to change without notice.
· 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.
k Using the Separate Appendix
Whenever you see the symbol
Appendix in this manual, it
means you should refer to the separate Appendix.
Example numbers (like "<#021>") in this User's Guide refer to the
corresponding example number in the Appendix.
Specify the angle unit in accordance with the marks in the Appendix:
Deg : Specify Degree for the angle unit.
Rad : Specify Radian for the angle unit.
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.
·For information about calculation modes and setup settings, see
"Calculation Modes and Calculator Setup".
·For information about memory, see "Using Calculator Memory".

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Safety Precautions
Be sure to read the following safety precautions before using this
calculator. Keep this manual handy for later reference.
This symbol is used to indicate information that can result in
personal injury or material damage if ignored.
·After removing the battery from the calculator, put it in a safe
place where it will not get into the hands of small children and
accidentally swallowed.
·Keep batteries out of the reach of small children. If accidentally
swallowed, consult with a physician immediately.
·Never charge the battery, try to take the battery apart, or allow
the battery to become shorted. Never expose the battery to
direct heat or dispose of it by incineration.
·Improperly using a battery can cause it to leak and damage
nearby items, and can create the risk of fire and personal injury.
·Always make sure that the battery's positive
k and negative
l ends are facing correctly when you load it into the
·Remove the battery if you do not plan to use the calculator
for a long time (fx-82ES/fx-83ES/fx-350ES).
·Use only the type of battery specified for this calculator in
this manual.
Disposing of the Calculator
·Never dispose of the calculator by burning it. Doing so can
cause certain components to suddenly burst, creating the risk
of fire and personal injury.