Ativa AT-30S Calculator User Manual


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3AFETY0RECAUTIONS
"E SURE TO READ THE FOLLOWING SAFETY PRECAUTIONS BEFORE USING
THISCALCULATOR+EEPTHISMANUALHANDYFORLATERREFERENCE
"ATTERIES
s !FTER REMOVING THEBATTERIES FROM THECALCULATORPUT THEMIN
A SAFE PLACE WHERE THERE IS NO DANGER OF THEM GETTING INTO
THEHANDSOFSMALLCHILDRENANDACCIDENTLYSWALLOWED
s +EEP BATTERIES OUT OF THE REACH OF CHILDREN )F ACCIDENTALLY
SWALLOWEDCONSULTWITHAPHYSICIANIMMEDIATELY
s .EVER CHARGE BATTERIES TRY TO TAKE BATTERIES APART OR ALLOW
BATTERIES TO BECOME SHORTED .EVER EXPOSE BATTERIES TO
DIRECTHEATORDISPOSEOFTHEMBYINCINERATION
s -ISUSE OF BATTERIES CAN CAUSE THEM TO LEAK ACID THAT CAN
CAUSE DAMAGE TONEARBY ITEMS ANDCREATES THE POSSIBILITY OF
FIREANDPERSONALINJURY
s !LWAYS MAKE SURE THAT A BATTERYgS POSITIVE  AND NEGATIVE
n SIDES ARE FACING CORRECTLY WHEN YOU LOAD IT INTO THE
CALCULATOR
s 2EMOVETHE BATTERIES IFYOU DO NOTPLAN TO USETHE CALCULATOR
FORALONGTIME
s 5SE ONLY THE TYPE OF BATTERIES SPECIFIED FOR THIS CALCULATOR IN
THISMANUAL
s $IM FIGURES ON THE DISPLAY OF THE CALCULATOR INDICATE THAT
BATTER
Y POWER IS LOW #ONTINUED USE OF THE CALCULATOR WHEN
THE BATTERY IS LOW CAN RESULT IN IMPROPER OPERATION 2EPLACE
THE BATTERYAS SOONAS POSSIBLE WHENDISPLAYFIGURES BECOME
DIM
$ISPOSINGOFTHE#ALCULATOR
s .EVER DISPOSE OF THE CALCULATOR BY BURNING IT $OING SO CAN
CAUSE CERTAIN COMPONENTS TO SUDDENLY BURST CREATING THE
DANGEROFFIREANDPERSONALINJURY
s 4HE DISPLAYS AND ILLUSTRATIONS SUCH AS KEY MARKINGS SHOWN
IN THIS/WNERgS -ANUAL ARE FOR ILLUSTRATIVE PURPOSESONLYAND
MAYDIFFERSOMEWHATFROMTHEACTUALITEMSTHEYREPRESENT
s 4HE CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT
NOTICE
nn
(ANDLING0RECAUTIONS
s "E SURE TO PRESS THE /. KEY BEFORE USING THE CALCULATOR FOR
THEFIRSTTIME
s %VEN IF THE CALCULATOR IS OPERATING NORMALLY REPLACE THE
BATTERY AT LEAST ONCE EVERY THREE YEARS $EAD BATTERY CAN
LEAK CAUSING DAMAGE TO AND MALFUNCTION OF THE CALCULATOR
.EVERLEAVETHEDEADBATTERYINTHECALCULATOR
s 4HE BATTERY THAT COMES WITH THIS UNIT DISCHARGES SLIGHTLY
DURING SHIPMENT AND STORAGE"ECAUSE
IT MAY REQUIRE
REPLACEMENTSOONERTHANTHENORMALEXPECTEDBATTERYLIFE
s ,OW BATTERY POWER CAN CAUSE MEMORY CONTENTS TO BECOME
CORRUPTED ORLOST COMPLETELY!LWAYS KEEP WRITTEN RECORDS OF
ALLIMPORTANTDATA
s !VOID USE AND STORAGE IN AREAS SUBJECTED TO TEMPERATURE
EXTREMES 6ERY LOW TEMPERATURES CAN CAUSE SLOW DISPLAY
RESPONSETOTAL FAILURE OF THE DISPLAY AND SHORTENING OF
BATTERY LIFE !LSO AVOID LEAVING THE CALCULATOR IN DIRECT
SUNLIGHT
WINDOW NEAR A HEATER OR ANYWHERE ELSE IT
MIGHT BECOME EXPOSEDTO VERY HIGH TEMPERATURES(EAT CAN
CAUSE DISCOLORATION OR DEFORMATION OF THE CALCULATORgS CASE
OINTERNALCIRCUITRY
s !VOIDUSE ANDSTORAGE INAREASSUBJECTED TO LARGEAMOUNTS OF
HUMIDITY AND DUST 4AKE CARE NEVER TO LEAVE THE CALCULATOR
WHERE IT MIGHT B
BY WATER OR EXPOSED TO LARGE
AMOUNTS OF HUMIDITY OR DUST 3UCH ELEMENTS CAN DAMAGE
INTERNALCIRCUITRY
s .EVER DROP THE CALCULATOR OR OTHERWISE SUBJECT IT TO STRONG
IMPACT
s .EVER TWIST OR BEND THE CALCULATOR !VOID CARRYING THE
CALCULATOR IN THE POCKET OF YOUR TROUSERS OR OTHER TIGHT
FITTING CLOTHING WHERE IT MIGHT BE SUBJECTED TO TWISTING OR
BENDING
s.EVERTRYTOTAKETHECALCULATORAPART
s.EVER PRESSTHE KEYSOF THECALCULATORWITH ABALLPOINTPEN OR
OTHERPOINTEDOBJECT
s 5SE A SOFT DRY CLOTH TO CLEAN THE EXTERIOR OF THE UNIT )F THE
CALCULATOR BECOMES VERY DIRTY WIPE IT OFF WITH ACLOTH
MOISTENED IN A WEAK SOLUTION OF WATER AND A
AL
HOUSEHOLD DETERGENT 7RING OUT ALL EXCESS MOISTURE BEFORE
WIPING THE CALCULATOR .EVER USE THINNER BENZINE OR OTHER
VOLATILE AGENTS TO CLEAN THE CALCULATOR$OING SO CAN REMOVE
PRINTEDMARKINGSANDDAMAGETHECASE
nn
4WOLINES$ISPLAY
9OU CAN SIMULTANEOUSLY CHECK THE CALCULATION FORMULA AND ITS
ANSWER 4HE FIRST LINE DISPLAYS THE CALCULATION FORMULA 4HE
SECONDLINEDISPLAYSTHEANSWER
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"EFORE3TARTING#ALCULATIONS
-ODES
"EFORE STARTING A CALCULATION YOU MUST FIRST ENTER THE CORRECT
MODEASINDICATEDINTHETABLEBELOW
s 0RESSINGTHE ;-/$%= KEY MORETHAN ONCEDISPLAYS ADDITIONAL
SETUP SCREENS3ETUPSCREENS ARE DESCRIBEDIN THESECTIONS OF
THIS MANUAL WHERE THEY ARE ACTUALLY USED TO CHANGE THE
CALCULATORSETUP
.OTE
s 4O RETURN THE CALCULATION MODE AND SETUP TO THE INITIAL
DEFAULTSSHOWNBELOWPRESS;3()&4=;#,2=;=;=
#ALCULATION-ODE #/-0
!NGLE5NIT $EG
%XPONENTIAL$ISPLAY&ORMAT .ORM
&RACTION$ISPLAY&ORMAT A
B
C
$ECIMAL0OINT#HARACTER $OT
s-ODEINDICATORSAPPEARINTHEUPPERPARTOFTHEDISPLAY
s "E SURE TO CHECK THE CURRENT CALCULATION MODE 3$ 2%'
#/-0 AND ANGLE UNIT SETTING $EG 2AD 'RA BEFORE
BEGINNINGACALCULATION
)NPUT#APACITY
s 4HE MEMORY AREA USED FOR CALCULATION INPUT CAN HOLD 
STEPS/NE STEP IS TAKEN UP EACH TIME YOU PRESS A NUMBER
KEY OR ARITHMETIC OPERATOR KEY
 ! ;3()&4= OR
;!,0(!=KEYOPERATION DOESNOTTAKE UPA STEPSO INPUTTING
;3()&4=;N0R=FOREXAMPLETAKESUPONLYONESTEP
s 9OU CAN INPUT UP TO  STEPS FOR A SINGLE CALCULATION
7HENEVER YOU INPUT THE RD STEP OF ANY CALCULATION THE
CURSOR CHANGES FROM ? TO 
J
TO LET YOU KNOW MEMORY IS
RUNNING LOW )F YOU NEED TO INPUT MORE THAN  STEPS YOU
SHOULDDIVIDEYOURCALCULATIONINTOTWOORMOREPARTS
nn
4OPERFORMTHIS 0ERFORMTHISKEY 4OENTER
TYPEOFCALCULATION OPERATION THISMODE
"ASICARITHIMETIC
CALCULATIONS
3TANDARDDEVIATION
2EGRESSIONCALCULATIONS
;
-ODE
=;=
;
-ODE
=;=
;
-ODE
=;=
#/-0
3$
2%'
s 0RESSING THE;!NS= KEY RECALLS THELAST RESULT OBTAINEDWHICH
YOU CAN USE IN A SUBSEQUENT CALCULATION 3EE !NSWER
-EMORYFORMOREINFORMATIONABOUTUSINGTHE;!NS=KEY
-AKING#ORRECTIONS$URING)NPUT
s5SE;= AND ;= TO MOVE THE CURSOR TO THE LOCATION YOU
WANT
s 0RESS ;$%,= TO DELETE THE NUMBER OR FUNCTION AT THE CURRENT
CURSORPOSITION
s 0RESS ;3()&4= ;).3= TO CHANGE TO AN INSERT CURSOR 
)NPUTTING SOMETHINGWHILE THEINSERT CURSORIS ONTHE DISPLAY
INSERTSTHEINPUTATTHEINSERTCURSORPOSITION
s 0RESSING ;3()&4= ;).3=OR;= RETURNS TO THE NORMAL CURSOR
FROMTHEINSERTCURSOR
2EPLAY&UNCTION
s %VERY TIME YOU PERFORM A CALCULATION THE 2EPLAY &UNCTION
STORES THE CALCULATION FORMULA AND ITS RESULT IN REPLAY
MEMORY 0RESSING THE ;= KEY DISPLAYS THE FORMULA AND
RESULT OF THE CALCULATION YOU LAST PERFORMED 0RESSING ;=
AGAIN BACK STEPS SEQUENTIALLY NEW TO OLD THROUGH PAST
CALCULATIONS
s 0RESSING THE ;= OR ;= KEY WHILE A REPLAY MEMORY
CALCULATIONISONTHEDISPLAYCHANGESTOTHEEDITINGSCREEN
s 0RESSING THE ;= OR ;= KEY IMMEDIATELY AFTER YOU FINISH A
CALCULATIONDISPLAYSTHEEDITINGSCREENFORTHATCALCULATION
s 0RESSING ;!#= DOES NOT CLEAR 2EPLAY MEMORY SO YOU CAN
RECALLTHELASTCALCULATIONEVENAFTERYOUPRESS;!#=
s 2EPLAY MEMORY CAPACITY IS  BYTES FOR STORAGE OF BOTH
EXPRESSIONSANDRESULTS
s2EPLAYMEMORYISCLEAREDBYANYOFTHEFOLLOWINGACTIONS
7HENYOUPRESSTHE;/.=KEY
7HENYOU INITIALIZEMODES ANDSETTINGSBY PRESSING;3()&4=
;#,2=;=;=
7HENYOUCHANGEFROMONECALCULATIONMODETOANOTHER
7HENYOUTURNOFFTHECALCULATOR
%RROR,OCATOR
s 0RESSING ;= OR ;= AFTERANERROROCCURSDISPLAYSTHE
CALCULATION WITH THE CURSORPOSITIONED AT THE LOCATION WHERE
THEERROROCCURED
nn
-ULTISTATEMENTS
! MULTISTATEMENT IS AN EXPRESSION THAT IS MADE UP OF TWO OR
MORESMALLEREXPRESSIONSWHICHAREJOINEDUSINGACOLON;=
%XAMPLE
ANDTHENMULTIPLYTHERESULTBY
;
=;!,0(!=;=;!NS=; =;=
;=
%XPONENTIAL$ISPLAY&ORMATS
4HIS CALCULATOR CAN DISPLAY UP TO  DIGITS ,ARGER VALUES ARE
AUTOMATICALLY DISPLAYED USING EXPONENTIAL NOTATION )N THE
CASE OF DECIMAL VALUES YOU CAN SELECT BETWEEN TWO FORMATS
THATDETERMINEATWHATPOINTEXPONENTIALNOTATIONISUSED
s 4O CHANGE THEEXPONENTIAL DISPLAY FORMATPRESS THE ;-/$%=
KEY A NUMBER OF TIMES UNTIL YOU REACH THE EXPONENTIAL
DISPLAYFORMATSETUPSCREENSHOWNBELOW
s 0RESS ;= /N THE FORMAT SELECTION SCREEN THAT APPEARSPRESS
;=TOSELECT.ORMOR;=FOR.ORM
s.ORM
7ITH .ORM EXPONENTIAL NOTATION IS AUTOMATICALLY USED FOR
INTEGER VALUES WITH MORE THAN  DIGITS AND DECIMAL VALUES
WITHMORETHANTWODECIMALPLACES
s.ORM
7ITH .ORM EXPONENTIAL NOTATION IS AUTOMATICALLY USED FOR
INTEGER VALUES WITH MORE THAN  DIGITS AND DECIMAL VALUES
WITHMORETHANNINEDECIMALPLACES
s !LL OF THE EXAMPLES IN THIS MANUAL SHOW CALCULATION RESULTS
USINGTHE.ORMFORMAT
nn
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
Ejtq
!NSX

&IX3CI.ORM

$ECIMAL0OINTAND3EPARATOR3YMBOLS
9OU CAN USE THE DISPLAY SETUP $ISP SCREEN TO SPECIFY THE
SYMBOLSYOUWANTFORTHEDECIMALPOINTANDDIGITSEPARATOR
s 4O CHANGE THE DECIMAL POINT AND SEPARATOR SYMBOL SETTING
PRESS THE;-/$%= KEY ANUMBER OFTIMES UNTILYOU REACH THE
SETUPSCREENSHOWNBELOW
s$ISPLAYTHESELECTIONSCREEN;=;=
s 0RESS THE NUMBER KEY ;= OR ;= THAT CORRESPONDS TO THE
SETTINGYOUWANTTOUSE
;=DOT 0ERIODDECIMALPOINTCOMMASEPARATOR
;=COMMA#OMMADECIMALPOINTPERIODSEPARATOR
3TACKS
4HIS CALCULATOR USES MEMORY AREAS CALLED STACKS TO
TEMPORARILY STORE VALUES NUMERIC STACK AND COMMANDS
COMMAND STACK ACCORDING TO THEIR PRECEDENCE DURING
CALCULATIONS 4HE NUMERIC STACK HAS  LEVELS AND THE
COMMAND STACK HAS  LEVELS ! STACK ERROR 3TACK %22/2
OCCURS WHENEVER YOU TRY TO PERFORM A CALCULATION THAT IS SO
COMPLEXTHATTHECAPACITYOFASTACKISEXCEEDED
s #ALCULATIONS ARE PERFORMED IN SEQUENCE ACCORDING TO
#ALCULATION 0RIORITY 3EQUENCE #OMMANDS AND VALUES ARE
DELETEDFROMTHESTACKASTHECALCULATIONISPERFORMED
/VERFLOWAND%RRORS
)F THE OPERATIONAL RANGE OF THE UNIT IS EXCEEDED OR INCORRECT
INPUTS ARE MADEAN ERROR MESSAGE WILL APPEAR ON THE DISPLAY
AND SUBSEQUENT OPERATION WILL BE IMPOSSIBLE 4HIS IS CARRIED
OUT BY THE ERROR CHECKFUNCTION 4HE FOLLOWING OPERATIONS WILL
RESULTINERRORS
 4HE ANSWER WHETHER INTERMEDIATE OR FINAL OR ANY VALUE IN
MEMORYEXCEEDSTHEVALUEOFp


 !N ATTEMPT IS MADE TO PERFORM FUNCTION CALCULATIONS THAT
EXCEEDTHEINPUTRANGE
 )MPROPER OPERATION DURING STATISTICAL CALCULATIONS EG
ATTEMPTINGTOOBTAINXORX
NWITHOUTDATAINPUT
 4HE CAPACITY OF THE NUMERIC VALUE STACK OR THE COMMAND
STACKISEXCEEDED
)NPUTERRORSAREMADEEG 
nn
$ISP
CASETOCASE -ATH%22/2
CASE 3TACK%22/2
CASE 3YNTAX%22/2
4HE CALCULATOR IS LOCKED UP WHILE AN ERROR MESSAGE IS ON THE
DISPLAY 0RESS ;!#= TO CLEAR THE ERROR OR PRESS ;= OR ;= TO
DISPLAY THE CALCULATION AND CORRECT THE PROBLEM 3EE %RROR
,OCATORFORDETAILS
)NTERNALDIGITS
&OR A SINGLE CALCULATION CALCULATION ERRORS IS p AT THE TH
DIGIT)N THECASE OFEXPONENTIAL DISPLAYCALCULATIONERROR IS p
ATTHE LASTSIGNIFICANTDIGIT %RRORSARECUMULATIVE INTHE CASEOF
CONSECUTIVE CALCULATIONS WHICH CAN ALSO CAUSE THEM TO
BECOME LARGE 4HIS IS ALSO TRUE OF INTERNAL CONSECUTIVE
CALCULATIONS THAT ARE PERFORMED IN THE CASE OF
}
X
Y
X
 X
N0RN#RETC
)N THE VICINITY OF A FUNCTIONgS SINGULAR POINT AND POINT OF
INFLECTIONERRORSARECUMULATIVEANDMAYBECOMELARGE
#ALCULATION0RIORITY3EQUENCE
#ALCULATIONS ARE PERFORMED IN THE FOLLOWING ORDER OF
PRECEDENCE

#OORDINATETRANSFORMATION0OLXY2ECR
4YPE!FUNCTIONS
7ITH THESE FUNCTIONS THE VALUE IS ENTERED AND THEN THE
FUNCTIONKEYISPRESSEDX
X
X
n
X
ggg
XXXY
ANGLEUNITCONVERSIONS
0OWERSANDROOTS
}
X
Y

X
&RACTIONSA
B
C
 !BBREVIATED MULTIPLICATION FORMAT IN FRONT OF PMEMORY
NAMEORVARIABLENAMESUCHASP!P!ETC
4YPE"FUNCTIONS
7ITH THESE FUNCTIONS THE FUNCTION KEY IS PRESSED AND THEN
THEVALUEISENTERED
LOGLNE
X

X
SINCOSTANSIN
n
COS
n
TAN
n
SINHCOSH
TANHSINH
n
COSH
n
TANH
n
n
 !BBREVIATED MULTIPLICATION FORMAT IN FRONT OF 4YPE "
FUNCTIONS!LOGETC
0ERMUTATIONCOMBINATIONN0RN#R

 
nn
s /PERATIONS OF THE SAME PRECEDENCE ARE PERFORMED FROM
RIGHTTOLEFTE
X
LN@ E
X
[LN]
s/THEROPERATIONSAREPERFORMEDFROMLEFTTORIGHT
s/PERATIONSENCLOSEDINPARENTHESESAREPERFORMEDFIRST
)NITIALIZINGTHE#ALCULATOR
s 0ERFORM THE FOLLOWING KEY OPERATION WHEN YOU WANT TO
INITIALIZE THE CALCULATION MODE AND SETUP AND CLEAR REPLAY
MEMORYANDVARIABLES
;3()&4=;#,2=;=;=
"ASIC#ALCULATIONS
!RITHMETIC#ALCULATIONS
5SE THE;-/$%= KEY TOENTER THE #/-0-ODE WHENYOU WANT
TOPERFORMBASICCALCULATIONS;-/$%=;=
s .EGATIVE VALUES INSIDE OF CALCULATIONS MUST BE ENCLOSED
WITHINPARENTHESES
SINnm;SIN=;=;n=;=
s )T IS NOT NECESSARY TO ENCLOSE A NEGATIVE EXPONENT WITHIN
PARENTHESES
SIN

n
m;SIN=;%80=;n=
nn
$ISPLAY
%XAMPLE /PERATION ,OWER
nn

n n

 


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 
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n
n 
n
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
PLEASENOTETHATINTERNALCALCULATIONISCALCULATED
INDIGITSFORAMANTISSAANDTHERESULTIS
DISPLAYEDANDROUNDEDOFFTODIGITS
;
=; =;=
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;
=; =
;=
;%80=;
=;n=
;%80=;n=;=
;=;
=;=; =
;%80=;=
;%80=;
=;=
;%80=;
=; =
;=
n
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0ERCENTAGE#ALCULATIONS
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%XAMPLE /PERATION ,OWER
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   
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=; =;=
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=; =; =; =
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=;=
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=;=; =;=
;
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#LOSEDPARENTHESES
OCCURRINGIMMEDIATELY
BEFOREOPERATIONOFTHE
;=KEYMAYBEOMITTED
;=; =;=;=; =;=
!MULTIPLICATIONSIGN;
=
OCCURRINGIMMEDIATELY
BEFOREANOPENPARANTHESES
CANBEOMITTED
;
=;=; =;=; =
;=
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%XAMPLE /PERATION ,OWER
0ERCENTAGE
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0REMIUM
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DISCOUNTFROM
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2ATIO
ISWHATOF
2ATEOFCHANGE
ISANINCREASEOF
WHATFROM
2ATEOFCHANGE
ISADECREASEOF
WHATFROM
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=;3()&4=;=
;
=;3()&4=;=; =
;
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;
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=;3()&4=;=
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&RACTIONS
s 9OU CAN USE THE DISPLAY SETUP $ISP SCREEN TO SPECIFY THE
DISPLAY FORMAT WHEN A FRACTION CALCULATION RESULT IS GREATER
THANONE
s 4O CHANGE THE FRACTION DISPLAY FORMATPRESS THE ;-/$%=KEY
A NUMBER OF TIMES UNTIL YOU REACH THE SETUP SCREEN SHOWN
BELOW
s$ISPLAYTHESELECTIONSCREEN ;=
s 0RESS THE NUMBER KEY ;= OR ;= THAT CORRESPONDS TO THE
SETTING YOU WANT TOUSE ;=A
B
CMIXED FRACTION ;= DC
IMPROPERFRACTION
s !N ERROR OCCURSIF YOU TRY TO INPUT AMIXED FRACTION WHILE THE
DCDISPLAYFORMATISSELECTED
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%XAMPLE /PERATION ,OWER
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;A
B
C=; =;A
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C=
;A
B
C=;=
CONVERSIONTODECIMAL
;A
B
C=
&RACTIONSCANBECONVERTED
TODECIMALSANDTHEN
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7HENTHETOTALNUMBER
OFCHARACTERSINCLUDING
INTEGERNUMERATOR
DENOMINATORAND
DELIMITERMARKEXCEEDS
THEINPUTFRACTIONIS
AUTOMATICALLYDISPLAYED
INDECIMALFORMAT
;A
B
C=; =;=
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