Casio fx-85WA User Manual
fx-85W
fx-85WA
fx-300W
fx-350TL
User’s Guide
Guía del usuario
Mode d’emploi
Bedienungsanleitung
Guida dell’utilizzatore
E S F G I
ENGLISH
Removing and Replacing
the Calculator’s Cover
• To Remove the cover
Grasp the top of the cover, and slide the unit out from the
bottom.
• To Replace the cover
Grasp the top of the cover, and slide the unit in from the
bottom.
Always slide the unit into the cover with the unit’s display
end first. Never slide the keyboard end of the unit into the
cover.
Safety Precautions
Be sure to read the following safety precautions before
using this calculator. Keep this manual handy for later reference.
Caution
This symbol is used to indicate information that can
result in personal injury or material damage if ignored.
Batteries
• After removing the batteries from the calculator, put
them in a safe place where there is no danger of
them getting into the hands of small children and
accidently swallowed.
• Keep batteries out of the reach of small children. If
accidently swallowed, consult with a physician immediately.
• Never charge batteries, try to take batteries apart, or
allow batteries to become shorted. Never expose batteries to direct heat or dispose of them by incineration.
• Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of fire and personal injury.
•Always make sure that a battery’s positive
•Remove the batteries if you do not plan to use the
•Use only the type of batteries specified for this cal-
l sides are facing correctly when you
negative
load it into the calculator.
calculator for a long time.
culator 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 danger of fire and personal injury.
k and
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• The displays and illustrations (such as key markings)
shown in this User’s Guide 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 these materials. Moreover,
CASIO Computer Co., Ltd. shall not be liable for any
claim of any kind whatsoever against the use of these
materials by any other party.
Handling Precautions
• Be sure to press the P button on the back of the cal-
culator (step 6 on page 29) before using it for the
first time (fx-350TL).
• Be sure to press the 5 key before using the calcu-
lator for the first time (fx-85W/fx-85WA/fx-300W).
• Even if the calculator is operating normally, replace
the battery at least once every three years.
Dead battery can leak, causing damage to and malfunction of the calculator. Never leave the dead battery in the
calculator.
• The battery that comes with the calculator when you
purchase it is for testing only. It may not provide full
service life.
• Low battery power can cause memory contents to
become corrupted or lost completely. Always keep
written records of all important data.
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• Avoid use and storage in areas subjected to tempera-
ture extremes.
Very low temperatures can cause slow display response,
total failure of the display, and shortening of battery life.
Also avoid leaving the calculator in direct sunlight, near
a window, near a heater or anywhere else it might become exposed to very high temperatures. Heat can cause
discoloration or deformation of the calculator’s case, and
damage to internal circuitry.
• Avoid use and storage in areas subjected to large
amounts of humidity and dust.
Ta ke care never to leave the calculator where it might be
splashed by water or exposed to large amounts of humidity or dust. Such elements can damage internal circuitry.
• Never drop the calculator or otherwise subject it to
strong impact.
• Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trousers or other tight-fitting clothing where it might be subjected to twisting or bending.
• Never try to take the calculator apar t.
• Ne ver press the keys of the calculator with a ball-point
pen or other pointed object.
• Use a soft, dry cloth to clean the exterior of the unit.
If the calculator becomes very dirty, wipe it off with a
cloth moistened in a weak solution of water and a mild
neutral household detergent. Wring out all excess moisture before wiping the calculator. Never use thinner, benzine or other volatile agents to clean the calculator. Doing so can remove printed markings and damage the
case.
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Contents
Safety Precautions .......................................... 1
Handling Precautions ....................................... 2
Two-line Display ............................................... 5
Key Layout ........................................................ 6
Before Starting Calculations... ....................... 8
kModes .................................................................... 8
kInput Capacity ........................................................ 9
kMaking Corrections Dur ing Input ........................... 9
kReplay Function ..................................................... 9
kError Locator .......................................................... 9
kExponential Display Formats ............................... 10
kAnswer Memory ................................................... 10
Basic Calculations ......................................... 11
Memory Calculations ..................................... 11
kIndependent Memory ........................................... 11
kVari ables .............................................................. 11
Fraction Calculations ..................................... 12
kFr action Calculations ........................................... 12
kDecimal-to-Fraction Conversion ........................... 12
kFr action-to-Decimal Conversion........................... 12
Percentage Calculations ................................ 13
Scientific Function Calculations ................... 14
kTr igonometric/Inverse Trigonometric Functions .... 14
kHyperbolic/Inverse Hyperbolic Functions ............. 15
kAngle Unit Conversion ......................................... 15
kCommon and Natural Logarithms/
Antilogarithms ...................................................... 15
kSquare Roots, Cube Roots, Roots, Squares,
Cubes, Reciprocals, Factorials,
Random Numbers and π .......................................... 16
kFIX, SCI, RND ..................................................... 16
kENG Calculations ................................................ 17
kCoordinate Conversion
(Pol(x, y), Rec (r, θ)) ............
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18
kPermutation .......................................................... 18
kCombination ......................................................... 18
Statistical Calculations ..................................19
kStandard Deviation (SD Mode) ............................ 19
kRegression Calculations (REG Mode) ................. 20
Formula Memory (fx-85W ) ............................. 23
Base-n Calculations (fx-85W ) ....................... 23
Degrees, Minutes, Seconds Calculations .... 25
Technical Information..................................... 25
kWhen you have a problem...... ............................. 25
kError Messages ................................................... 26
kOrder of Operations ............................................. 27
kStacks .................................................................. 27
kPower Supply ....................................................... 28
kInput Ranges ....................................................... 30
Specifications ................................................ 32
Two-line Display
You can simultaneously check the calculation
formula and its answer.
The first line displays the calculation formula.
The second line displays the answer.
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Key Layout
Key Layout
<
fx-350TL
>
18
Rec (
r
9
REPLAY
C
C
Page
Page
Page
Page
Page
Page
Page
12
SHIFT
ALPHA
16 18 16
x!
16 18 1618 16 15
12
17 12 1616 15 15
11 25 11 1111 14 11 14 11
AB
11 25 1415 14
Page
Page
11 11 1111 11
Page
20 2020 9 11 19
A BINS
MODE
15 15
10
-1
-1
cos
D
sin
EF
1120 20 11 11 11
XY
OFF
e
-1
tan
M-
M
2019
DT CL
McI
ScI
Page
Page
Page
Page
20 2020
y
19 1919 20 20
17 1616 15 13
Rnd Ran#
Page
fx-85WA/fx-300W:
11
OFF ON
E-6
9
y
DRG
10
2
McI
McI
ScI
ScI
Key Layout
<
fx-85W
>
Page
Page
Page
Page
Page
Page
Page
12
SHIFT
ALPHA
23 16
16 24
x!
LOGIC
23 16 1618
12
17 12 1616 15 15
11 25 11 1111 14 11 14 11
AB
11 25 1415 14
Page
Page
11 11 1111 11
Page
20 2020 9 11 19
A
BINS
9
REPLAY
18
Rec (
DEC OCTHEX BIN
C
r
C
MODE
16 15
24 15 24 15 24
10
e
-1
-1
cos
sin
D
1120 20 11 11 11
XY
tan
EF
M-
DT CL
McI
2
ON
-1
M
2019
ScI
Page
Page
Page
Page
Page
20 2020 18 18
y
nPr nCr
19 1919 20 20
9
17 1616 15 13
Rnd Ran#
DRG
11 10
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y
Before Starting Calculations...
k Modes
Application
Calculation Modes
Normal calculations COMP –
Standard deviation
calculations
Regression calculations REG REG
Base-n calculations BASE-N b (binary)
(fx-85W only) o (octal)
Angle Unit Modes
Degrees DEG R
Radians RAD T
Grads GRA B
Display Modes
Exponential notation
(Canceling FIX and SCI
specification)
Number of decimal
place specification
Number of significant
digit specification
Note!
•Mode indicators appear in the lower part of the display,
except for the Baseponent part of the display.
•You cannot set the angle unit or the display mode while
the calculator is in the BASE-N mode (fx-85W).
• The COMP, SD, and REG modes can be used in combination with the angle unit modes.
• Be sure to check the current calculation mode (SD, REG,
COMP) and angle unit mode (DEG, RAD, GRA) before
beginning a calculation.
n indicators which appear in the ex-
Mode Mode
Name Indicator
SD SD
NORM1 –
NORM2 –
FIX Fix
SCI Sci
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d (decimal)
H (hexadecimal)
k Input Capacity
• The memory area used for calculation input can hold 79
“steps.” Whenever you input the 73rd step of any calculation, the cursor changes from “_” to “k” to let you know
memory is running low. If you still need to input more,
you should divide your calculation into two or more parts.
k Making Corrections During Input
•Use e and r to move the cursor to the location you
want.
[ to delete the number or function at the current
•Press
cursor position.
A K to change to an insert cursor t. Inputting
•Press
something while the insert cursor is on the display inserts the input at the inser t cursor position.
e, r, A K, or = returns to the normal cur-
•Press
sor from the insert cursor.
k Replay Function
•Pressing r or e recalls the last calculation you performed. You can then make any changes you want in the
calculation and re-execute it.
•Pressing
•Replay memory is cleared whenever you start a new
t does not clear Replay memory, so you can
recall the last calculation even after you press
calculation, change to another mode, or turn off power.
t.
k Error Locator
•Pressing r or e after an error occurs displays the
calculation with the cursor positioned at the location
where the error occurred.
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