HP -27S Owner's Manual page 23

The Keyboard
The
I
(shiftl
Key
Most keys have a second function printed
in
blue above the k"y. The
blue shift
k*y
accesses
these operations.
Tlo
do a "shifted"
operation,
press
and
release
I
to turn on the shift
annunciator
(-').
Then,
press the kuy. For example, pressing
I
followed by
Ictn
I
(also
written
![Oref)
turns the calculator off.
If
you accidentally
press
J,
press
!
again
to turn off
the shift
annunciator.
The
[NPm Key
The
t
tNPUfl
kuy is used
in
certain applications
to
enter information
into
memory. You can also use
llr.tpuT I
in
place
of
p
in
arithmetic
calculations. Using
I
ttww
I
is
covered
where
it
is used throughout the
manual.
Editing and Glearing
the
Galculator
Line
When the cursor is visible,
E
@ackspace)
deletes
the last
character
you keyed in. When the cursor is not visible,
E
deletes
the number
furthest
to
the right.
Pressing
f
cLR-l
when the calculator is on usually
clears
the
calculator
line. When an error
message
is
displayed,
lct.nl erases
the
message
and
restores
the original contents
of
the calculator line.
l:
Getting Started
21