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User's Guide
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U.S. Pat, 4,410,956 |
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SA9911-A
Printed in China
HA310973-1
© 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.
[IS Hor
6 CORE
autions.
' Be sure to read the following safety precautions helord
using this calculator. Keep this manual handy for later ref-
erence,
——
Caution
: i This symbol is used to indicate information that can
J. 0
result in personal injury or material damage if ignored.
Batieries
® After removing the batteries from the calculator, put
them in a safe place where there is no danger of
them geiting into the hands of smail children and
accidently swallowed,
* Keep batteries out of the reach of smail children. If
accidently swallowed, consult with a physician im-
mediately.
* Never charge batteries, try to take batteries apart, or
allow batteries to become shorted. Never expose bat-
feries to direct heat or dispose of them by incinera-
tion.
» Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of tire and personal injury.
»* Always make sure that a battery's positive ® and
negative © sides are facing correctly when you
load it into the calculator.
* Remove the batteries if you do not plan to use the
calculator for a long time.
* Use only the type of batteries specified for this cal-
culator in this manual.
Disposing of the Calculator
© Never dispose of the calculator by burning it. Doing
80 Can Cause certain components to suddenly burst,
creating the danger of fire and personal injury.
® The displays
and illustrations (such as key markings)
shown in this User's Guide are for illustrative pur-
poses only, and may differ somewhat from the actual
items they represent. .
a
Ment
wae
® The contents of this inafuial
6 subject
to
change :
_ without notice,"
:® Inrio event shall CASIO yom
to anyone for special
"sequential daniages.in connection with or arising out -
of the purchase or use of these materials. Moréover,
. CASIO Computer Co:; Lid'shall:not
be liable for any
_-¢laim of any kind whatsoever against
the use of these
"materials by any. other. party... :
i.
ailatéral; incidental, of on- | 2
Bs
® Be sure to press the P button on'the back of the cal-
culator before using it for.the first time: fOese TE:
. B3WA/Tx-270W PLUS/fx-350TL).
q
:
e Be sure to press the (00) key before using 'the calgu-
_ lator for the first time Pew
ee nA
° Even if the calculator i is operating normally, replace
the battery at least once every three years for the
fx-BSWA/fx-85W/fx-B5
WA /fx-270W PLUS/fx-300W/fx-
350TL/fx-911W, or at least once every. two years
for the {-82TL.
Dead battery can leak, causirig damage to and maifunc-
tion of the caiculator. Never leave ie dead battery i in 'the
calculator.
The battery" that comes with this: unit 'discharges
slightly during shipment.and-storage. Because of
this, it may require replacement: sooner hen ane nor-
'mal expected baitery life.
ve".
2
'Low battery power can cause memory contents fo
, become corrupted or Josi completely... Always. keep
: written records of all important data...
>,
Avoid use and storage in areas ning to 'eripart
' ture extremes, .
Very low temperatures can cause 8 low ispley response,
total failure of the display, and shortening of battery life.
Also avoid teaving the calculator in direct sunlight, near
a window, near a heater of anywhere else it might be-
come exposed to very high temperatures, Heat can cause
discoloration or deformation e the calculators case, 'and
damage to internal-circuitry. «
:
'Avoid use and storage:in 'areas: 5 subjected " large
"amounts of humidity.and dust. -
:
Take care never to leave the caloulsiée where it might be
splashed by water or exposed to large amounts of hu-
midity or dust. Such elements can damagé internal cir-
cuitry.
Never drop the calculator or otherwise subject it to
strong impact.
©
:
Never twist or bend the calculator:
Avoid carrying the calculator i in the pocket of your trou:
~ sers or other tight-filting clothing where it might be sub-
jected to twisting or bending.
Never try to take 'the-calculator apart.
a
Never press the keys of the calculator with 2 a ball -point
pen or other pointed abject...
Use a soft, dry cloth to'clean the extérior. 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
: netitral household detergent. Wrihg out all excess modis-
- 'ture before wiping the calculator.Never usé thinner, ben-
"zine or other. volatile agents to clean the calculator, Do-
» ing so can remove printed markings and damage. the
. case.
Lobe
:
€
2
You can simultaneously eheck ane calculation
formula and its answer. :
The first line displays the:calculation foams
~The second line displays the answer. i
ieee
Application: a :
Calculation Modes}
'Normal calculations
«2
Standard deviation
........
calculations
:
tah
Regression calculations ( |
"REG
|
REG ™
82
|. 8D
-Base-n calculations
~_- | BASE-N|'b (binary)
(fx-85W only)
1
(octal)
: dl (decimal)
Angle Unit Modes ©:
Degrees _.
Radians
Grads
=>
.
| Dispiay Modes
e v
thts,
- Exponential notation:
(Canceling FIX and SCI
specification)
;
Number of decimal
place'specification —
Number of sigeiticant «
ao
sas ec
'Note!
* Mode indicators appear in the lower part of the 'display,
- except for the Base-7 indicators which appear in the ex:
: ponent part of the display,
.
» You cannot set the angle unit or the display mode whilé
_ the calculator is in the BASE-N mode (fx-85W).
'¢ The COMP, SD, and REG modes can be used in combi
'. nation with the angle unit modes.
* Be.sure to check the current calculation mode (sp, REG,
__ COMP) ; and angle unit mode: vee RAD, SRAM before
beginning a calculation.
fl Input Capacity
° ° The j memory aréa used for calculation' input can hold 79
" *steps> Whenever you input the 73rd step of any caleu-
lation, the cursor changes from "." to "fa" to let you know
memory is" running: low. If you' stil hieéd to input more,
You, should divide your
lation into two Of more paris,
ia Making Corrections. During Input
° Use (i) and OF) to'move the cursor to the location you
want.
Press 4) to delete the number or function at the current
~ cursor position.
Press E48) {Hi8} fo change to an "eat eUiSor 02 C3. Inputting
: "something: while the jiisert cursor Is 'oir the display in-
serts the input at the insert cursor position...
Press (4), (5), Saal ws),
3), oF EB returns to 'the normal cur-
"sor from the insert cursor'
.
formed. You eenneh make any changes you bis in the
calculation and re-execute it.
;
* Pressing 'AG) does not clear Replay memory, 80 301 ry ean
recall the last calculation even after you press &
° Replay memory is cleared 'whenever you start a new
calculation, change to another mode, or turn off power.
ElError Locator
° Pressing &) or 4) after an error occurs displays the cal-
culation with the cursor positioned at the ocailon phere
the error occurred.
iE Expotidi tial Display F
Formats"
This calculator can display up to 10 digits. Larger v
yalies
are automatically displayed using exponential notation: In
the case of decimal values, you can select between: two
formats that determine.at what paint exponential notation
is used. Press fine] foc] freed faoee] (3) 7] (or 2.) to select: NORM
1 or NORM 2 (ix 'BSW): For other madels, pee bes) (tone (rone}
(3) (4) (or 2): -
rah
¢ NORM 1
With NORM 1, exponential notation is automatically. used
for integer values with more than 10 digits and decimal
values with more than two decimal places.
* NORM 2
With NORM 2; exponential notation is dionaieaiy iisod
for integer values with moré than 10 digits and decimal
values with more than nine decimal places.
° All of the examples in this: manual 'shaw calculation re-
sults-usitig the NORM 1 'format:
;
.
Answer
Memory' »
« Whenever you press [3 after inputting hee or. an Ox-
pression, the caiculated result is automatically.stored in
Answer Memory. You can recall Answer bine contents
by pressing as),
« Answer Memory can store up to ie cl forthe mantissa
* and two digits for the. exponent. -
:
;
'» Answer Memory contents aré not 'eliangéd if the opera-
tion performed by any = the above eae opersiictie re-
--$ults in an error.
a
° Use the COMP mode for basic caiculations. .....
¢ Example
1: 3x(5x408) 00 eof.
ses ui
ees
"memory, or subtracted from memory. nde pendant
memory is convenient for 'calculating cumulative totals.
* Independent memory uses the same memory area as
variable M.
* To clear independent memory w, input (9
(6 sia) (a
* Example:
wee
t e
Rbk,
23 + 9.= 32.0
9 Sid GA)
153-6
= 47..:
50 BE 6 0)
Variables
e There are nine variables (A through F Ms, xX nd¥), which
'can be Used to store' Galas 'Cofistants, : results, 'and other
values,"
° Use the following dpetaitiont to delete dat assign a to all
nine variables: bor) (mel) GB.
;
° Use the following operation to delete data | assigned toa
particular variable: 0) 810) (4). This oan delétes the
data assigned to variable A. .
;
° Example:
193.2 + 23 = 8.42«
193.2 + 28 6.9
°
499-9
Gi)
sea [aT]
fas
eee
a Fraction Calculations .
® Use the COMP mode for traction 'calculations.
* Values are automatically displayed in decimal format
whenever the total number of digits'of a fractional value °
{integer + numerator + denominator + separator marks)
exceeds 10,
e Example 4 S414
4 o a
1B 4h ¢ 12)
2 {a 3
OY
TAB.
o Example 2: 4 + 6°
<q 2 2
® Fraction/decimal calculation results are always decimal.
@ Decimal-to-Fraction Conversion
* Example: 2.75
25 2768
al (Se)
Fraction-to- Decimal Cotiversion be
° Example:
$0 0.5 st ee:
ee
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