EasyManuals Logo

HP HP-25 User Manual

HP HP-25
131 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #36 background imageLoading...
Page #36 background image
To
key
in
negative
exponents
of
10,
key
in
the
number,
press
=
.
pressH
to
make
the
exponent
negative,
then
key
in
the
power
of
10.
For
example,
key
in
Planck’s
constant
(h)—
roughly,
6.625
x
107%"
erg
sec.—and
multiply
it
by
50.
Press
Display
Ea[Fx]2
6.625
B
6.625
-00
27
6.625
-27
50
Erg
sec.
Using
the
@@
key,
you
can
key
in
numbers
made
up
of
10-digit
mantissas
and
two-digit
exponents
of
10.
However,
when
you
use
the
[E34
key,
the
HP-25
displays
each
number
as
an
eight-
digit
mantissa
and
a
two-digit
exponent
of
10.
In
a
few
cases,
a
number
may
have
to
be
altered
slightly
in
form
before
you
can
key
it
in
using
the
EZq
key:
=
If
youkey
in
a
number
whose
mantissa
contains
more
than
eight
digits
to
the
left
of
the
decimal
point,
the
[Z34
key
is
overridden
and
does
not
operate.
Begin
again
and
key
in
the
number
in
a
form
that
displays
the
mantissa
with
eight
digits
or
less
to
the
left
of
the
decimal
point
before
pressing
the
B3
key.
(Thus,
123456789.1
x
10?3
could
be
keyed
in
as
12345678.91
x
10%.)
=
If
you
key
in
a
number
whose
first
significant
digit
occurs
after
the
first
eight
digits
of
the
display,
the
[E24
key
does
not
operate
upon
that
number.
To
key
in
the
number
cor-
rectly,
begin
again
and
place
the
number
in
a
form
such
that
its
first
significant
digit
is
one
of
the
first
eight
digits
of
the
display,
then
proceed
using
the[E23
key.
(Thus,
0000.000025
X
10%
cannot
be
keyed
in
in
that
form.
It
could
be
keyed
in
as
0000.00025
x
107,
or
as
0.000025
x
10%,
for
example.)

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the HP HP-25 and is the answer not in the manual?

HP HP-25 Specifications

General IconGeneral
BrandHP
ModelHP-25
CategoryCalculator
LanguageEnglish

Related product manuals