Ativa AT-30S Calculator User Manual


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$EGREES-INUTES3ECONDS#ALCULATIONS
9OU CAN PERFORM SEXAGESIMAL CALCULATIONS USING DEGREES
HOURS MINUTES AND SECONDS AND CONVERT BETWEEN
SEXAGESIMALANDDECIMALVALUES
&)83#)2.$
!S THE NUMBER OF DECIMAL PLACES IS SPECIFIED THE INTERMEDIATE
RESULT WILL BE AUTOMATICALLY ROUNDED TO THE SPECIFIED DECIMAL
PLACES (OWEVERTHE STORED INTERMEDIATE RESULT ISNOT ROUNDED
)N ORDER TO MATCH THE DISPLAYED VALUE AND THE STORED VALUE
;3()&4=;2.$=CANBEINPUT
s4O CHANGETHE SETTINGS FOR THENUMBER OFDECIMAL PLACESTHE
NUMBER OF SIGNIFICANT DIGITS OR THE EXPONENTIAL DISPLAY
FORMAT PRESS THE ;-/$%= KEY A NUMBER OF TIMES UNTIL YOU
REACHTHESETUPSCREENSHOWNBELOW
s 0RESSTHE NUMBER KEY ;=;=OR;= THAT CORRESPONDSTO THE
SETUPITEMYOUWANTTOCHANGE
;=&IX.UMBEROFDECIMALPLACES
;=3CI.UMBEROFSIGNIFICANTDIGITS
;=.ORM%XPONENTIALDISPLAYFORMA
T
nn
%XAMPLE /PERATION $ISPLAY
4OEXPRESSDEGREES
INDEGMINSEC
4OPERFORMTHECALCULATION

g 
;g=;=
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=
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$ISPLAY
%XAMPLE /PERATION ,OWER
 
ROUNDEDTODECIMAL
PLACES
ROUNDTHESTORED
INTERMEDIATERESULTTO
THESPECIFIEDTHREE
DECIMALPLACES
#ANCELSPECIFICATIONBY
SPECIFYING.ORMAGAIN
; =; =;=
;
-ODE
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;
=;=
4HEINTERMEDIATERESULTISAUTOMATICALLY
ROUNDEDTOTHESPECIFIEDTHREEDECIMALPLACES
;3()&4=;2.$=
;
=
;=
;
-ODE
=;=.ORM;=
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


!NS
UPPERDISPLAY


&IX3CI.ORM

-EMORY#ALCULATIONS
!NSWER-EMORY
s 7HENEVER YOU PRESS ;= AFTER INPUTTING VALUES OR AN
EXPRESSION THE CALCULATED RESULT AUTOMATICALLY UPDATES
!NSWER-EMORYCONTENTSBYSTORINGTHERESULT
s )NADDITION TO ;=!NSWER-EMORY CONTENTS AREALSO UPDATED
WITH RESULT WHENEVER YOU PRESS ;3()&4= ;=;-= ;3()&4=
;-n=OR ;3()&4
=;34/=FOLLOWEDBY ALETTER! THROUGH&OR-
8OR9
s9OUCANRECALL!NSWER-EMORYCONTENTSBYPRESSING;!NS=
s !NSWER -EMORY CAN STORE UP TO  DIGITS FOR THE MANTISSA
ANDTWODIGITSFORTHEEXPONENT
s !NSWER -EMORY CONTENTS ARE NOT UPDATED IF THE OPERATION
PERFORMED BY ANY OF THE ABOVE KEY OPERATIONS RESULT IN AN
ERROR
#ONSECUTIVE#ALCULATIONS
s ! CALCULATION RESULT PRODUCED BY PRESSING ;= CANBE USED IN
THENE
XTCALCULATION
s 4HE RESULT OF A CALCULATION CAN ALSO BE USED WITH A
SUBSEQUEN
T 4YPE ! FUNCTION 
X
X
X
n
 X  
}
X
Y

X
N0RN#RAND
ggg
)NDEPENDENT-EMOR
Y
s 6ALUES CAN BE INPUT DIRECTLY INTO MEMORYADDED TO MEMORYOR
SUBSTRAC
TED FROM MEMORY)NDEPENDENT MEMORY IS CONVENIENT
FORCALCULATINGCUMULATIVETOTALS
s )NDEPENDENT MEMORY USES THE SAME MEMORY AREA AS VARIABLE
-
s4OCLEARINDEPENDENTMEMORY-INPUT;=;3()&4=;34/=;-=
%XAMPLE)NPUTTOINDEPENDENTMEMORY
!#=;=;=;=
;-=
2ECALLMEMORYDATA
;!#=
;2#,=;-=
nn
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E
?
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-
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!DDSUBTRACT
;-=;3()&4=;-n=
2ECALLMEMORYDATA
;!#=
;2#,=;-=
6ARIABLES
s 4HERE ARE NINE VARIABLES ! THROUGH &-8 AND 9WHICH CAN
BEUSEDTOSTOREDATACONSTANTSRESULTSANDOTHERVALUES
s 5SE THE FOLLOWING OPERATION TO DELETE DATA ASSIGNED TO A
PARTICULAR VARIABLE ;= ;3()&4= ;34/= ;!= 4HIS OPERATION
DELETESTHEDATAASSIGNEDTOVARIABLE!
s 0ERFORM THEFOLLOWING KEY OPERATION WHENYOU WANT TO CLEAR
THE VALUES ASSIGNED TO ALL OF THE VARIABLES;3()&4= ;#,2= ;=
;=
3CIENTIFIC&UNCTION#ALCULATIONS
5SE THE;-/$%= KEY TO ENTER THE#/-0 -ODEWHEN YOUWANT
TOPERFORMBASICCALCULATIONS;-/$%=;=
s #ERTAIN TYPES OF CALCULATIONS MAY TAKE A LONG TIME TO
COMPLETE
s 7AIT FOR THE RESULT TO APPEAR ON THE DISPLAY BEFORE STARTING
THENEXTCALCULATION
s P
4RIGONOMETRIC)NVERSE4RIGONOMETRIC&UNCTIONS
s 4O CHANGE THE DEFAULT ANGLE UNIT DEGREES RADIANS GRADS
PRESS THE;-/$%= KEY ANUMBER OFTIMES UNTILYOU REACH THE
ANGLEUNITSETUPSCREENSHOWNBELO
W
s 0RESS THENUMBER KEY ;=;= OR;= THAT CORRESPONDS TO THE
ANGLEUNITYOUWANTTOUSE

PRADIANSGRADS
nn
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
(YPERBOLIC)NVERSE(YPERBOLIC&UNCTIONS
nn
$ISPLAY
%XAMPLE /PERATION ,OWER
SIN
g

COSPRAD
TANnGRAD
n
SIN
COS
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SIN
n
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COS
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PRAD
TAN
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SIN
n
 COS
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;
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=;=$EG
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g=;
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;
-ODE
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;
-ODE
=;=$EG
;SIN=;COS=;=
;
3()&4
=;SIN
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=;=
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%XAMPLE /PERATION ,OWER
SINH
COSH
TANH
COSH
SINH
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SINH
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SINH
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COSH
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 TANH
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=;HYP=
;SIN=;=
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#OMMONAND.ATURAL,OGARITHMS!NTILOGARITHMS
3QUARE2OOTS#UBE2OOTS2OOTS
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%XAMPLE /PERATION ,OWER
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