Casio FX-82ES PLUS Manuale utente

CASIO CALCULATOR

fx-82ES PLUS

fx-85ES PLUS

fx-350ES PLUS

User's manual

Important information

The images and pictures (such as key labels) in this user's manual are for illustrative

purposes only and may differ slightly from the actual things they represent.

The content of this manual is subject to change without notice.

In no event shall CASIO Computer Co., Ltd. be liable to anyone for any special, collateral,

accidental or consequential damages that may arise in connection with or as a result of

the purchase or use of this product and items not belonging to it. In addition, CASIO

Computer Co., Ltd. takes no responsibility for any complaints from any third party

arising out of the use of this product and related items.

Keep this user’s manual on hand for future use.

Examples of operations

Examples of operations in this manual are indicated by this icon Unless explicitly

stated, all sample operations assume that the calculator is in its original default setting.

Use the procedure under "Calculator Initialization" to return the calculator to its original

default settings.

Calculator initialization

Perform the following procedure to initialize the calculator and return the calculation

mode, including configuration, to their original settings. Note that this operation will

erase all data from the calculator memory.

Safety notice

•Keep batteries out of the reach of small children.

•Use only the batteries specified for this calculator in this manual.

Usage notice

•Even if the calculator operates normally, replace the battery at least every three

years (LR44 (GPA76)), every two years (R03 (UM-4)), or every year (LR03 (AM4)). A

discharged battery may leak, causing damage and malfunction to the calculator.

Never leave a discharged battery in the calculator. Do not attempt to use the

calculator when the battery is completely discharged (fx-85ES PLUS).

•The battery supplied with this calculator slowly discharges during shipping and

storage. For this reason, an earlier replacement than usual may be required.

•Do not use an Oxyride battery or any other type of nickel primary battery with

this product. Incompatibilities between such batteries and product specifications

may result in shorter battery life and product malfunction.

•Avoid using and storing the calculator in locations with temperature extremes,

high humidity, and dust.

•Do not subject the calculator to excessive shock, pressure or bending.

•Never attempt to disassemble the calculator.

•Clean the outside of the calculator with a soft and dry cloth.

•When disposing of the calculator or batteries, do so in accordance with the laws

and regulations in your area.

•The company and product names used in this manual may be registered

trademarks or trademarks of their respective owners.

Removing the hard cover

Before using the calculator, slide the hard cover down to remove it, and then attach it to

the back of the calculator as shown in the picture below.

How to turn On & Off

Press ON to turn on the calculator.

Press SHIFT + AC (OFF) to turn off the calculator.

Automatic shutdown

If you do not perform any operation on the calculator, it will turn off automatically after

about 10 minutes. If this happens, press the ON key to return the calculator to the on

state.

Adjust the display contrast

The following operation key displays the contrast adjustment screen:(CONTRAST)

. Next, use the arrows to adjust the contrast. When you

reach the desired setting, press AC.

Important: If the display contrast setting does not improve its readability, it probably

means that the battery is low. Replace the battery.

Key labels

Press the SHIFT or ALPHA key and then press the next key to perform an alternative

function for the second key. The alternative function is indicated by the text above the

key. The following table explains the meaning of the different colors for alternative key

functions.

If the text color is above the key:

It means:

Yellow

Press SHIFT and then the key to perform

the function.

Red

Press ALPHA and then press the key to

insert the appropriate variable, constant

or symbol.

Alternative function

Key function

Reading the display

The calculator display shows the expressions you have entered, the results of the

calculations, and various indicators.

•If the indicator appears to the right side of the calculation result, it means that

the displayed calculation result continues to the right. Use the arrows to move

the display of the calculation result.

•If the indicator appears to the right of the inserted expression, it means that

the displayed calculation continues to the right. Use the arrow keys to move the

display of the inserted expression. Be aware that if you want to move the

inserted expression while the indicators and are displayed, you will need to

press AC first and then use the arrows to move.

Indications on the display:

Indicator:

Significance:

The keyboard has been moved by pressing the SHIFT key. Pressing any

key will scroll back to the basic keyboard and this indicator will

disappear.

The alpha input mode has been set by pressing the ALPHA key.

Pressing any key exits the alpha input mode and this indicator will

disappear.

The value is stored in independent memory.

STO

The calculator is ready to insert a variable name so that it can add its

value. This indicator appears when you press SHIFT + RCL (STO).

RCL

The calculator is ready to insert a variable name so that it can recall its

value. This indicator appears when you press RCL.

Inserted expression

Result of the calculation

Indicators

STAT

The calculator is in STAT mode.

Angular units are degrees.

Angular units are radians.

Angular units are gradients.

FIX

The number of decimal places is effective.

SCI

The number of valid digits is effective.

Math

The Natural View format is selected.

Calculation history memory data is available and can be played or

there is more existing data above / below the screen.

Disp

The display is just showing the intermediate result of the multi-

expression calculation.

Important: For calculations that take a long time, the display can only show the above

indicators (without any value) while the entered calculation is running internally.

Some of the calculator operations are performed from the menu. For example, pressing

MODE or HYP displays a menu of available functions.

The following operations that you should use to navigate between menus.

•You can select a menu item by pressing the number key that corresponds to the

number on the left side of the menu screen.

•Use the UP and DOWN arrows to switch between menus.

•To close the menu without selecting anything, press AC.

Determining the calculation mode

To perform the following operation

Perform these key operations:

General calculations

MODE + 1 (COMP)

Statistical and regression calculations

MODE + 2 (STAT)

Generate a table of numbers based on

an expression

MODE + 3 (TABLE)

Note: The initial standard calculation mode is COMP mode.

Calculator configuration settings

First, perform the following key operations to display the setup menu: SHIFT + MODE

(SETUP). Next, use the arrow keys and number keys to configure the selected setting.

The underlined setting values are the original default settings.

1. MthlO (Natural View)– displays fractions,

irrational numbers, and other expressions as if

they were written on paper.

MthlO: Selects MathO or LineO. MathO displays

input expressions and calculation results as if they were written on paper.

LineO displays input expressions just like MathO but displays the calculation

results in Line View.

2. LinelO (Line View) displays fractions and other expressions in a single line.

Note: The calculator switches to Line View automatically whenever you enter STAT

mode. In this manual, the MATH symbol next to the sample operation means Natural

View (MathO), while the LINE symbol means Line View.

3. Deg

4. Rad

5. Gra

Specifies degrees, radians, or gradients as angular units for the input value and the

display of the calculation result.

Note: In this manual, the DEG symbol next to the sample operation means degrees,

while the RAD symbol means radians.

6. Fix

7. Sci

8. Norm

Specifies the number of digits to display the result.

FIX – The value you select (from 0 to 9) determines the number of decimal places to

display the calculation results. The results of the calculations are rounded to the

specified decimal place.

SCI – The value you select (from 1 to 10) determines the number of significant digits to

display the calculation results. The results of the calculations are rounded to the

specified decimal place.

NORM – Selecting from one of the two setting options (Norm1, Norm2) determines the

range in which the results will be displayed in non-exponential form. Outside the

specified range, the results will be displayed exponentially.

Specifies either a mixed fraction (ab / c) or

a false fraction (d / c) to display the

fractions in the calculation results.

Specifies whether to display the FREQ

(frequency) column on the Stat Editor

screen in STAT mode.

Specifies whether to display a decimal

point or a decimal comma for decimal

places. The decimal point is always

displayed when pasting.

Note: When a decimal point is selected

for decimal places, the separator for

multiple results is a comma. When a

decimal comma is selected for decimal

places, the separator is a semicolon.

Adjusts the contrast of the display.

Initialization of settings

To initialize the calculator, perform the following action, which returns the calculation

mode to COMP and returns all other settings, including menu settings, to default values.

Entering expressions and values

Basic rules for entering

Calculations can be entered in the same form as they are written. When you press =, the

priority in the calculation order will be evaluated automatically and the result will appear

on the display.

Inserting closing parentheses is required for sin, sinh, and other functions that include

parentheses.

Multiplication symbols can be omitted when they appear right before open parentheses,

before functions that include parentheses, and before variables.

The closing parenthesis just before the operation = can be omitted.

If the calculation is longer than the screen width during insertion, you can move using

the arrows.

If the cursor changes to , it indicates that there are less than 10 places left to enter

numbers. End the entered expression and press =.

Inserting with Natural View

Selecting Natural View allows you to insert and display fractions and certain functions

just as they are written in the textbook.

If you enter too many functions, further input may be impossible. If this happens, divide

the calculation into several parts and calculate each one separately.

When you press = and get the result, part of the expression may be cut. If you need to

see the whole expression, press AC and use the arrows to scroll through the expression.

Using values and expressions as arguments

The value or expression that you entered can be used as argument functions.

Overwrite input mode (Line view only)

You can select either insert or overwrite as the input mode. Use SHIFT + DEL (INS. To

switch between modes).

Correction and removal of an expression

To delete an individual character or function: Move the cursor to the right of the

character or function you want to delete, then press DEL.

To insert a character or function: Use the arrow keys to move the cursor to the location

where you want to insert and then paste.

To clear all inserted calculations: Press AC.

Switching calculation results

When Natural View is selected, each press of toggles the currently displayed

calculation result between the fraction, square root form and the decimal form.

Basic calculations

Calculations with fractions

The method for inserting fractions is different depending on whether you are using

Natural View or Line View.

Mixing fractions and decimal values in a calculation when Line View is selected will cause

the result to be displayed as a decimal value.

Fractions are displayed in the results after they are truncated.

Calculations with percentages

By entering a value and pressing the entered value becomes a percentage.

Calculations with degrees, minutes, seconds (Sexagesimal)

By pressing you can switch between sexagesimal and decimal. Value input format

for the sexagesimal system: degrees , minutes , seconds . You must always

enter a value for degrees and minutes, even if they are zero.

Multiple expressions

You can use a colon (:) to join two or more expressions, and then evaluate those

expressions from left to right by pressing =.

Using the technical form of numbers

A simple key operation (ENG) can be used to convert the displayed value to the technical

state.

History of calculations

In COMP mode, the calculator remembers up to approximately 200 bytes of the latest

calculation data. Use the UP and DOWN arrows to scroll through the contents of the

history memory.

The contents of the calculation history memory are cleared whenever you press ON,

change to another calculation mode, change the displayed format, or perform any reset

operation.

Repetition

While the result of the calculation is shown on the display, you can press the RIGHT and

LEFT arrows to edit the expression used for the previous calculation.

Memory of the last result (Ans)

The last received calculation result is stored in Ans (last result memory). The memory

contents of the last result are updated whenever a new calculation result is displayed.

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