2
th
e
written
problem a
nd
the
answer
is
obtained
oy depressing t
he
e key.
Note th
at
any
com
m
ands
wrongly
ma
de
ca
n be
corrected by successive depression
of
the
proper
command
key.
(6)
III CLEAR
KEY
Clears
keyboard
e
ntr
y for
correction.
When 'de-
pressed immediately
after
any of the
comma
nd
keys
(D,
c::::I
,
EI
or
~
L it does not f
unct
i
on.
(7)
CiI
ALL
CLEAR KEY
Clears
the
ent
ire
ma
chine and releases the ove
r-
flow check.
(8)
iii
" KEY
Enters
the
circular co
nstant
in
7 digits
(3.1415921.
(9)
§]
COMMON
LOGARITHM
KEY
Obtains
the
common
logari
thm
of
the
display.
(10)(8
NATURAL
LOGARITHM
KEY
Obtains
the
natural logari
thm
of
the display.
(11)
~
EXPONENTIAL KEY
Ob
tains the exponential
of
the
display.
(12) l!:l N-th
POWER
KEY
In
structs
the
display to raise
to
N-th
pow
er.
(13)
~
RECIPROCAL
KEY
Obtains
the
reciprocal
number
of
the display.
(14)8 SEXAGESIMAL
....
DECIMAL
. CONVERSION KEY
Converts the display
to
the
de
cimal scale.
(15)8 SINE
KEY
Obtains
the
sine
of
the
angle on display.
(16) 8 COSINE KEY
Obta
ins the cosine
of
the angle on display.
(17)8
TANGENT
KEY
Obtains
the
tange
nt
of
the angle
on
display,
(18)0 SQUARE ROOT KEY
Obt
ains the square root
of
the display.
2 /
HANDLING
OF
THE
CALCULATOR
Befo
re
operatio
n, please be sure to check
th
e
pro
per setting
of
the
dr
y
batte
ri
es
or
co
nne
c-
tion
of
the
AC
Adaptor.
The
calculator should be o
perated
correctly
in
accordance with this instruction manual with
firm and separ
ate
key
pr
essing. Two
or
more
numeral andlor
comm
and keys should
not
be
pressed simultaneously,
as
this may damage
the
m
ac
hine.
:3
/
DISPOSABLE
DRY
BATTERY
OR
AC
OPERATION
This
ca
lculator
ope
rates on either
dry
batteries
or
AC
with the use of
the
AC
ADAPTOR.
3-1 DRY
BATTERY
OPERATION
With fo
ur
Alkaline
dry
batte
ries (AM·3J it
ope
r
at
es for
approximate
ly 17
hours
continuously.
Even
when
batte
ry power decreases,
th
e display will merely darken b
ut
cause no miscalculation,
When you have finished
your
calcu l
at
i
on,
be su
re
to
switch
off
the
power
switch
to
save
battery
power
.
To
cha
n
ge
batter
ies, put
the
power
switch
off
first. Slide open
the
battery
cover
and
re
place
batte
ries.
3-2
AC
OPERATION
If
you are in a 117V area, for instance. use a 117V
AC
ADAPTOR.
When, you use an
AC
ADAPTOR
of
a differe
nt
vol tage,
it
may cause
dama
ge
to
both
the
AC
ADAPTOR a
nd
calculator.
Plug
the
applicab
le
AC
ADAPTOR (100, 117, 220 or 240V) into the
AC
outlet and the
cord
in
to
the calculato
r.
When plugged in,
battery
power
supply stops
automa
tically, so b
attery
power
is
not
wasted,
4 /
0VERFLOW
Princip
al
ly. overfl
ow
occurs
when
the
integer
part
of an answer exceeds 8 digits
17
, when
the
f
ig
ure
is
negative) and stops
furthe
r calculation, showing D's (zeroes) on
all
columns.
In
function calculations, however,
th
e overflow also occurs
in
the following instances:
a)
When either a
common
or natu
ral
logarit
hm
of
0 (zero)
is
obtained
b) When the
trigonom
etric
functions
are perf
orme
d for a degr
ee
exceeding ±
1440
°
c)
When
the
exponentia
l function
is
performed
for
a
num
ber exceed
in
g
:1:
10.
d)
When
the
answer
of
a
Ta
ngent
is
larger than ±1000.
Depress
th
e
ell
key to release the
ove
r
f
l
o~
check pri
or
to starting a new calculation.
3
