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HP HP-25 - HP-25 Display Modes; Fixed Point Display Settings

HP HP-25
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results
inside
the
calculator
for
you
and
brought
them
out
on
a
last-in,
first-out
basis
when
it
was
time
to
multiply.
No
matter
how
complicated
a
problem
may
look,
it
can
always
be
reduced
to
a
series
of
one-
and
two-number
operations.
Just
work
through
the
problem
in
the
same
logical
order
you
would
use
if
you
were
working
it
with
a pencil
and
paper.
For
example,
to
solve:
O
x8
+(7Tx%x2
4
x5)
Press
Display
9
ENED
8
Intermediate
result
of
(9
X
8).
7
2
Intermediate
result
of
(7
X
2).
(9
x
8)
added
to
(7
x
2).
4
ENEY
5(x]
Intermediate
result
of
(4
x
5).
=
The
final
answer.
Now
try
these
problems.
Remember
to
work
through
them
as
you
would
with
a
pencil
and
paper,
but
don’t
worry
about
inter-
mediate
answers—they’re
handled
automatically
by
the
calculator.
Problems
2%x3)+
(4x5=[2600
(14
+
12)
x
(18
-
12)
s
-[@Ew
\/16.
X5
N
=[181.00
38
05
4x
(17
-12)
+
(10
=
5)
=
[4.00
Je+3)x@+5
+Je+7x@®+9)
=[2157
A
Word
About
the
HP-25
Now
that
you’ve
learned
how
to
use
the
calculator,
you
can
begin
to
fully
appreciate
the
benefits
of
the
Hewlett-Packard
logic
system.
With
this
system,
you
enter
numbers
using
a
parenthesis-free,
unambiguous
method
called
RPN
(Reverse
Polish
Notation).

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