HP 9120A Operating Manual
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t4 KEYBOARD
EEE
With the exception of the
LIST key all the
keys
of the
printer's
keyboard
are the
press-to-hold
(ON), press-again-
to-release
(OFF)
type.
When
pressed
the first time the
key
will
remain depressed, and
the switch
is
ON;
when
pressed
again the switch
will return
to
its
extended
position
and
the
switch is
OFF.
Applies
power
to the
printer
provided
the calculator's ON-
OFF switch is on.
Releasing this switch will
remove
power
from
the
printer.
When
the
calculator is turned OFF,
power
is automatically removed
from
the
printer.
Selects the
calculator register
(s)
to be
printed.
Any or all
of these
registers may be selected.
To
print
the
register(s),
press
the
PRINT key
on the
calculator or enter
a PRINT
instruction in a
program.
NOTE
Successive
print
instructions
(programmed
or
manual) will result in the
first instruction caus-
ing the registers selected to
be
printed,
and
the
remaining
print
instructions causing the
printer
to space. lf
a duplication of register
printing
is
desired, insert
any calculator instruction
(man-
ual or
programmed)
between
the
print
instruc-
tions.
Will cause
the
printing
of the
contents of
the
calculator's
memory.
The
printing
will'begin at the
program
counter's
location and
will
continue
until
an END statement is en-
countered
in
the
program
or
gntil
STOP on the
keyboard
of the
calculator is
pressed.
ln order
to
print
the
END
statement at
the
end of a list operation one or more of the
X, Y or
Z
pushbuttons
must be depressed. lf one or
more
are
not
depressed,
listing will
occur
normally except that
the
END statement will not be listed at
the
end of
the
program.
NOTE
The LIST switch
is
deactivated
during calcula-
tor
program
execution.
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