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HP HP-18C User Manual

HP HP-18C
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Starting
to
Use
the
HP-18C
Installing the Batteries
1
The
HP-18C
is
powered
by
three
N-cell alkaline batteries. Batteries
are
included
with
the
calculator.
If
the
batteries
are
not
already in-
stalled, follow
the
instructions
that
start
on
page
185.
Turning the HP-18C
On
and Off
To
turn
on
the
calculator, press I ON I. Pressing I
ON
1 again
turns
the
HP-18C
off. Since
the
HP-18C
has
Continuous
Memory,
turning
it
off
does
not
affect
the
information
you've
stored there.
To
conserve energy,
the
HP-18C
turns
itself off
ten
minutes
after you
stop
using it.
If
you see
the
low
battery
symbol (c::::J)
at
the
top
of
the
display,
you
should
replace
the
batteries as
soon
as possible. Follow
the
in-
structions
starting
on
page
185.
Setting the Display Contrast
The
display brightness
and
sharpness
depend
on
lighting, your view-
ing angle,
and
the
display contrast
setting
.
To
change
the
display
contrast,
hold
down
the
I
ON
1 key
while
you press
[I)
or
[I]
.
1:
Starting
to
Use
the
HP-18C
15

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HP HP-18C Specifications

General IconGeneral
BrandHP
ModelHP-18C
CategoryPDA
LanguageEnglish

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