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1.
"ON" Switch
A
two
position sllde
switch that
turns the
Calculator "ON" &
"OFF".
e'
o
enters '1'
Raises e(2.71828) to
power of x shown on the
Display, up to
a
limit of
x
=
18.42.
3.
Keyboard
25 keys that may be categorized into groups
of data keys, arithmetic operation keys,
memory operation keys, and command
function keys as tollows:
A. Data Funclion Keys (all are dual-purpose
and labelled ac.cordingly. Character mode
refers to label on keyface, while Function
mode
refers to label situated directly
above key.)
enters
'6'
Computes the arc-
tangent, in degrees or
radians, of any
displayed
number whether positive
-, or negative.
,
enters '2'
Computes the natural
logarithm of any
displayed number
greater than zero.
Error condition is set for
a negative number.
enters '3'
Computes the logarithm
(base 10) of any
displayed number
greater than
zero.
Error
condition is set for a
negative
number.
enters '4'
Computes the arcsine, in
degree or ra.dians, of
any displayed number
from 0 to ±1. Error
condition is set tor any
other number.
enters '5'
Computes the arcosine,
in degrees or radians, of
any displayed number
from 0 to :±:1. Error
condition is set for any
other number.
LNX
EJ
SIN-T
D
COS-T
D
LOG X
D
A
two
position slide
switch that selects
degrees or radians for
the
expression of angles.
6
Function Mode
Computes square root of
a displayed number that
is greater than zero.
Error condition is set for
a
negative
number.
enters '0'
Computes reciprocal of
a displayed number.
Error condition is set for
a
display of zero.
Ilx
l:)
Character
Key
Mode
\/i
enters '.'
a
(decimal)
2.
OEG/RAD Switch
2
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