Table of Contents
Advertisement
D
I
PREFIX
I
1
2.00
am
1'-
-
_
2._
00
_
----'
Function Keys
51
Clears the blue
prefix
keystroke.
The correct operation,
change
sign,
is performed.
Number Alteration Keys
Besides
mm
there
are
three keys provided
on the
H P-25 for
altering
numbers
.
These
keys
are
~
,
I
FRAC
I
and
[[2J
,
and
they
are
most useful
when
performing
operations as
part
of
a
program
.
Absolute Value
Some calculations
require the absolute
value
,
or
magnitude
,
of a
number.
To obtain
the
absolute value of
the
number in
the
display, press the
III
prefix key
followed
by
the
~
(abso lute
va lue)
key. For
example,
to calcul ate the
absolute value of
-
3:
Press
Display
1-3.
1
3.00
1
-3
1
To see
the
absolute value
of
+3:
Press
Display
III
~
13.00
1
1 +31
Integer Portion of a Number
To extract and
display the
integer
portion
ofa number
,
press the
D
prefix key followed by theCJ
(integer)
ke y.
For example
,
to display
only the
integers
of
the number 123.456:
Press
123.456
D
OEfJ
Display
1
123.456
1123.00
Only the
integer portion
of
the
number remains
.
When
OEfJ
is pressed, the
fractional
portion
of
the number
is
lost.
The entire
number
,
of course,
is
preserved in
the
LAST X
register.
Fractional Portion of a Number
To place
only
the
fractional
portion
of a
number into the
dis-
played X-register
,
press
the
III
prefix key
followed
by the
Hide quick links:
Advertisement
Table of Contents
