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18
Specific Features of the HP-33E
Number Alteration Keys
Besides
ICHSI
,
your HP-33E
has
three
other
keys
provided
for alteri ng
numbers
-
IAssl
,
~
,
and
IFRACI.
These
keys are often
used in
pro-
grams
for manipulating numbers.
Absolute Value
Some calculations require
the
absolute va lue or
magnitude
of a
number
.
To
obtain
the
absolute
va
lue
of
the number
in
the
displayed
X-register,
press
the
(!)
prefix key followed
by
the
IAasl
(absolute value)
key
.
For
example,
to
calcu late
the
absolute value of -3.
Keystrokes
3
1CHSI
001 ••• 1
Display
-3.
3.0000
Integer Portion of
a
Number
Hi
To
extract
and display the integer portion of
a
number,
press the
00
prefix key followed by
the
OED
(integer)
key. For
example,
to display
only
the integer ponion
of
the
number
123.456:
Keystrokes
t23.456
00
Gill
Display
123.456
123.0000
Only the
integer portion
remains.
When
OO~
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 extract and
display
only the
fractional
portion of a number,
press
the
00
prefix
key followed
by the
IFAACI
(jracliofl)
key.
For
example,
to
see
the
fract ional portion of
the 123.456
used
above:
ii=
i!=
i!=
i!=
i!=
~
~
i!=
e=
i!=
e=
ri!=
e=
~
~
i!=
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