Casio fx-82ZA PLUS User manual
Table of Contents
Before Using the Calculator.................................................... 4
About this Manual.................................................................................... 4
Initializing the Calculator..........................................................................4
Precautions..............................................................................................4
Safety Precautions..........................................................................................4
Handling Precautions......................................................................................5
Getting Started.........................................................................................5
Removing the Hard Case................................................................................5
Turning Power On and Off.............................................................................. 6
Adjusting Display Contrast..............................................................................6
Key Markings.................................................................................................. 6
Reading the Display........................................................................................7
Using Menus................................................................................................... 9
Calculation Modes and Calculator Setup.............................10
Calculation Mode................................................................................... 10
Configuring the Calculator Setup...........................................................10
Initializing Calculator Settings....................................................................... 14
Inputting Expressions and Values........................................15
Basic Input Rules...................................................................................15
Inputting with Natural Display................................................................ 16
√ Form Calculation Range.................................................................... 16
Using Values and Expressions as Arguments (Natural Display only)....17
Overwrite Input Mode (Linear Display only)...........................................18
Correcting and Clearing an Expression................................................. 18
Basic Calculations..................................................................19
Toggling Calculation Results..................................................................19
Fraction Calculations............................................................................. 20
Percent Calculations..............................................................................21
Degree, Minute, Second (Sexagesimal) Calculations............................21
Multi-Statements....................................................................................22
Using Engineering Notation................................................................... 22
Remainder Calculations.........................................................................23
Prime Factorization................................................................................24
Calculation History and Replay..............................................................24
Calculation History........................................................................................ 24
Replay...........................................................................................................25
Using Memory Functions....................................................................... 25
Answer Memory (Ans)/Previous Answer Memory (PreAns)......................... 25
Variables (A, B, C, D, E, F, M, X, Y)..............................................................27
Independent Memory (M)..............................................................................27
1
Clearing the Contents of All Memories..........................................................28
Function Calculations............................................................29
Pi (π), Natural Logarithm Base e............................................................ 29
Trigonometric Functions........................................................................ 29
Hyperbolic Functions............................................................................. 29
Angle Unit Conversion........................................................................... 30
Exponential Functions............................................................................30
Logarithmic Functions............................................................................30
Power Functions and Power Root Functions.........................................31
Rectangular-Polar Coordinate Conversion............................................ 32
Factorial Function (!)..............................................................................33
Absolute Value Function (Abs)...............................................................33
Random Number (Ran#)........................................................................34
Random Integer (RanInt#)..................................................................... 34
Permutation (nPr) and Combination (nCr)............................................. 34
Rounding Function (Rnd).......................................................................35
Greatest Common Divisor (GCD) and Least Common Multiple (LCM).....
...............................................................................................................35
Using Calculation Modes.......................................................36
Statistical Calculations (STAT)...............................................................36
Inputting Data................................................................................................37
Statistics Calculation Screen.........................................................................38
Using the Statistics Menu..............................................................................38
Calculating Estimated Values........................................................................43
Creating a Numerical Table from Two Functions (TABLE).....................44
Base-n Calculations (BASE-N).............................................................. 46
Specifying the Number Mode of a Particular Input Value..............................47
Converting a Calculation Result to another Type of Value............................48
Logical and Negation Operations..................................................................48
Ratio Calculations..................................................................................50
Changing the Ratio Expression Type............................................................51
RATIO Mode Calculation Example................................................................51
Technical Information............................................................ 52
Errors..................................................................................................... 52
Displaying the Location of an Error...............................................................52
Clearing the Error Message.......................................................................... 52
Error Messages.............................................................................................52
Before Assuming Malfunction of the Calculator... ............................... 54
Replacing the Battery.............................................................................54
Calculation Priority Sequence................................................................55
Calculation Ranges, Number of Digits, and Precision........................... 56
Calculation Range and Precision..................................................................56
Function Calculation Input Ranges and Precision........................................ 57
2
Specifications.........................................................................................59
Verifying the Authenticity of Your Calculator..........................................59
Frequently Asked Questions.................................................61
Frequently Asked Questions..................................................................61
3
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
• Use only the type of battery specified for this calculator in this
manual.
Handling Precautions
• Even if the calculator is operating normally, replace the battery
according to the schedule shown below. Continued use after the
specified number of years may result in abnormal operation. Replace
the battery immediately after display figures become dim.
fx-82ZA PLUS II: Every two years
• A dead battery can leak, causing damage to and malfunction of the
calculator. Never leave a dead battery in the calculator.
•The battery that comes with the calculator is for factory testing,
and it discharges slightly during shipment and storage. Because of
these reasons, its battery life may be shorter than normal.
• Do not use a nickel-based primary battery with this product.
Incompatibility between such batteries and product specifications can
result in shorter battery life and product malfunction.
• Avoid use and storage of the calculator in areas subjected to
temperature extremes, and large amounts of humidity and dust.
• Do not subject the calculator to excessive impact, pressure, or bending.
• Never try to take the calculator apart.
• Use a soft, dry cloth to clean the exterior of the calculator.
• Whenever discarding the calculator or batteries, be sure to do so in
accordance with the laws and regulations in your particular area.
Getting Started
Removing the Hard Case
Before using the calculator, slide its hard case downwards to remove it,
and then affix the hard case to the back of the calculator as shown in the
illustration below.
5
Turning Power On and Off
• Press to turn on the calculator.
• Press (OFF) to turn off the calculator.
Note
• The calculator also will turn off automatically after approximately 10 minutes or
approximately 60 minutes of non-use. Press the key to turn the calculator back
on.
Adjusting Display Contrast
1. Press (SETUP) ( CONT ).
2. Use and to adjust display contrast.
3. After the setting is the way you want, press .
Important!
• If adjusting display contrast does not improve display readability, it probably means
that battery power is low. Replace the battery.
Key Markings
Pressing the or 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.
(1) Keycap function (2) Alternate function
• Characters enclosed in brackets (┌ ┐) that are the same color as DEC,
HEX, BIN, and OCT are used in the BASE-N Mode.
• The following shows an example of how an alternate function operation
is represented in this manual.
Example: (sin-1)* 1
6
* Indicates the function that is accessed by the key operation (
) 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 manual.
Example: (COMP)*
* Indicates the menu item that is selected by the number key
operation ( ) before it. Note that this is not part of the actual key
operation you perform.
• The cursor key is marked with four arrows, indicating direction, as
shown in the illustration nearby. In this manual, cursor key operation is
indicated as , , , and .
Reading the Display
The two-line display makes it possible to view both the input expression
and its result at the same time.
(1) Input expression
(2) Calculation result
(3) Indicators
• If a indicator appears on the right side of the calculation result, it
means the displayed calculation result continues to the right. Use
and to scroll the calculation result display.
• If a indicator appears on the right side of the input expression, it
means the displayed calculation continues to the right. Use and
to scroll the input expression display. Note that if you want to scroll the
input expression while both the and indicators are displayed, you
will need to press first and then use and to scroll.
7
Display indicators
This indicator: Means this:
The keypad has been shifted by pressing the
key. The keypad will unshift and this indicator will
disappear when you press a key.
The alpha input mode has been entered by
pressing the key. The alpha input mode will
be exited and this indicator will disappear when
you press a key.
MThere is a value stored in independent memory.
STO
The calculator is standing by for input of a variable
name to assign a value to the variable. This
indicator appears after you press (STO).
RCL
The calculator is standing by for input of a variable
name to recall the variable's value. This indicator
appears after you press .
STAT The calculator is in the STAT Mode.
The default angle unit is degrees.
The default angle unit is radians.
The default angle unit is grads.
FIX A fixed number of decimal places is in effect.
SCI A fixed number of significant digits is in effect.
Math Natural Display is selected as the display format.
Calculation history memory data is available and
can be replayed, or there is more data above/
below the current screen.
Disp The display currently shows an intermediate result
of a multi-statement calculation.
8
Important!
• For some type of calculation that takes a long time to execute, the display may show
only the above indicators (without any value) while it performs the calculation
internally.
Using Menus
Some of the calculator's operations are performed using menus. Pressing
or , for example, will display a menu of applicable functions.
The following are the operations you should use to navigate between
menus.
• You can select a menu item by pressing the number key that
corresponds to the number to its left on the menu screen.
• The indicator in the upper right corner of a menu means there is
another menu below the current one. The indicator means another
menu above. Use and to switch between menus.
• To close a menu without selecting anything, press .
9
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