HP 9120A Operating Manual page 16

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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