Texas Instruments TI Programmable 57 User Manual

8 n — THE
LABEL KEY SEQUENCE
MERGED CODES
| tbl | n — Tue Laser Key SEQuENCE
This
key
allows
you
to
Jabel
any
point
in
a
program
(or
an
entire
program),
or
a
subroutine
(subroutines
will
be
discussed
later).
When
in
“learn”
mode,
you
press
the
MB
n
key
sequence,
where
nis
any
digit
0
through
9.
This
lets
you
label
up
to
10
points
in
a
program.
(Label
numbers
cannot
be
repeated
in
the
same
programs.)
Labels
in
a
program
are
convenient,
because
they
work
with
other
keys
(9)
and
),
to
let
you
place
the
program
pointer
at
any
point
ina
program
you
select.
Labels
don't
interfere
with
any
program
steps
or
calculations
in
progress
—
they
are
just
reference
‘signposts’
for
you
and
the
program
pointer.
You
should
put
a
label
at
any
key
point
in
your
program
—
especially
if
you
are
going
to
want
the
program
pointer
to
go
(or
transfer”)
to
that
point
as
your
program
runs.
If
you
label
a
program
point,
you
can
start
your
program
running
from
that
point
easily
by
using
the
key
(we'll
discuss
this
in
a
moment).
Menrcep Cones:
The
entire
WB
n
key
sequence
takes
only
one
program
step,
because
the
calculator
stores
both
the
instruction
and
label
digit
with
a
special
shortened
code
called
a
merged
code.
Try
this
on
your
calculator:
Turn
it
OFF
and
then
ON,
press
,
then
Ml.
The
display
now
reads:
00 86 0
The
first
two
digits
are
the
step
number:
00,
the
next
two
digits
are
the
code
for
"label:
86,
and
the
last
digit
(zero)
is
the
location
for
the
label
number
(0-9).
You
would
now
enter
a
label
digit
to
complete
the
label
—
say
3.
When
you
press
3
the
display
reads:
01
00,
which
is
the
next
step
location for program entry.
There
are
several
program
key
sequences
that
use
this
merged
code
format.
Basically,
these
are
any
of
the
functions
that
require
a
label
number
or
memory
location
to
be
complete.
(All
the
memory
instructions
,
etc.
are
examples.)
Whenever
you
see
the
third
rightmost
digit
light
up
while
you're
programming
in
“learn’’
mode,
the
calculator
is
requesting
a
label
or
memory
number
(0-9).
(Don’t
forget
to
put
one
in
—
and,
also,
keep
a
record
of
what
each
label
or
memory
is
being
used
for.)
Note
that
the
MIB
n
key
sequence
also
uses
a
merged
code.

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English