Section 1
Getting Started
Your
HP-25
is
shipped fully
assembled,
including a
battery
.
You
can
begin using
your
calculator
immediately by
connecting
the
cord
from the ac
adapter
/
battery
charger
to the
calculator
and plugging the
charger
into an ac outlet.
If
you want to use
your
HP
-2
5 on
battery
power
alone, you should charge the bat-
tery for 6
hours
first.
Whether
you
operate
from
battery
power
or
from
power
supplied by the
charger
, the battery
must
always
be
in
the calculator.
To
begin:
• Slide the
PRGM-RUN
switch P!lGM
mil
RUN
to
RUN
.
• Slide the
OFF-ON
switch
OFF~
O
N
to
ON.
Display
With
the
PRGM-RUN
switch
set
to
RUN,
the bright red dis-
play
that
you see when you turn the
calculator
ON
gives you
two kinds
of
information:
I.
You
see numbers as you key them in.
2.
You
see all intermediate and final
answers
as they
are
calculated.
When
you first turn the
calculator
ON
, the display is
set
to
I
0.00
I to show you that a
ll
zeros are present there.
Keyboard
Most
keys
on
the
keyboard
perform three functions.
One
func-
tion
is
indicated by the symbol on the flat face
of
the key,
another
by the blue symbol on the slanted key face,
and
a third by the
gold symbol written a
bove
the key on the
calculator
case
.
•
To
se
lect the function printed
in
blue on the slanted face
of
the key, first press the blue prefix key
II
, then press the
function key.
•
To
select the function printed on the flat face
of
the key,
press the ke
y.
•
To
se
lect the function printed
in
gold
above
the key, first
press the gold prefix key , then press the function key.
13
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