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7
IX:M]
Memory
exc hange
key
This key
exchanges
the
COil
tents
of
display register for
memory
register.
[
M
~]
Recall/Oeu memory
key
Recalls
the
contenlS
of the
memory
and
displays.
Depress
this
key
subsequently twice
to
clear the content
of
memory.
[n!]
Factorial key
Calculates
the
factorial of the displayed
number. The
numbe
r
must be a positive integer
less than
10.
II/X]
Reciprocal key
Calcu lates reciprocal
of any
number
displayed.
I
X
2]
Square
key
Calculates a
square of the
displayed
number.
[!XI
Squue
roo
t
key
Calculates a sq
uare
root
of the displayed
number.
I~
I
Cube
roo
t
key
Calculates
a
cube root
of
the
displayed
number,
[yX] Y
to
the
X
power
key
Used
to obtain
X
powers
of
Y
.
[HYP]
Hype
rboilic
key
Followed by
§!) ,@!l.
or
~
key,
the
respective
hyperbolic
function
Yalue of the
displayed number is
calculated
independent
of
the selector
switch.
~
Inverse
key
This key
sets the
calculator
in
the
"Inverse
funClion"
mode.
Followed by
a
trigonometric
key,
hyperbo
lic
and
trigonometric
kcy,
or
the keys with upper
case
designation,
the
respective
inverse
function
value of the displayed
numbe
r
will
be
obtained. e.g.
the
operation
[!!l
~
will
funct
ion as "sin
·
1
",
Thc " Inverse function" mode
is
reset
by the next
de-
pression
to
this key
except
§)
,
EE
or
[ill .
SlW1
COS-
I
TAN-I
~
[COS]
[TAN
I
Trigono
metric
fun
ction
keys
Calculates respectiye function
va
lue
of
displayed angle.
e'
[Ln]
Nltural logarilh
m key
Calculates loga
ri
thm to the
base e of the number
displayed.
Calculates eX
in
the inyene
mode.
8
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