Texas Instruments TI Programmable 57

—-
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STEPS
IN
WRITING
A
PROGRAM
anal
|
Del_]
—“Derete”
Key
SEQUENCE
This
sequence
allows
you
to
remove
an
instruction
from
a
program,
and
close
up
the
gap
—
moving
all
the
following
instructions
up
by
one
location.
Just
step
to
the
exact
instruction
you
want
to
delete,
and
press
the
GB
key
sequence.
Steps
In
WRITING
A
PROGRAM:
As
you
learn
more
about
programming,
you'll
begin
falling
into
a
“natural
rhythm”
where
programming
solutions
will
begin
to
suggest
themselves
to
you
as
soon
as
you're
confronted
with
a
problem.
The
actual
steps
you'll
follow
in
getting
to
a
program
solution
will
naturally
depend
on
your
personal
approach,
but
these
steps
suggest
one
way
to
proceed:
1.
Study
the
problem
—
gather
the
equations
and
procedures
you'll
need.
2.
Set
a
destination
for
yourseli.
Determine
how
you'll
use
the
program,
so
that
when
the
program
is
complete,
you'll
know
what
to
enter,
what
keys
you'll
press,
and
what
you
want
to
see
displayed.
3.
Plan
the
Program
“Route”
—
Conceptualize
how
the
program
pointer
will
“flow”
through
the
program
(a
flow
chart
or
schematic
diagram
of
the
steps
you'll
follow
may
be
helpful
here).
4.
Write
down
the
actual
program
steps
(or,
as
you
gain
confidence,
key
them
right
into
your
machine).
As
you
go
along
keep
careful
track
of
what
is
stored
in
each
memory,
and
what
any
label
you
use
signifies.
These
are
items
that
are
easy
to
forget,
and
forgetting
them
is
a
common
source
of
error
and
‘start
overs’.
5
Once
the
program
is
entered,
check
it
with
known
test
data
to
be
sure
it's
working.
Edit
and
correct
as
necessary.
7.
Document
or
“write
up”
the
program
carefully
to
save
it
for
future
use.
Standard
program
record
forms
are
provided
for
this
purpose
and
the
form
is
arranged
to
follow
the
“steps
in
writing
4
program”
that
we've
discussed
here.
Once
your
program
is
working,
you
can
press
;
and
then
use
the
key
to
step
through
the
key
codes
and
record
them
on
the
program
record
forth.
This
type
of
complete
record
will
let
you
(or
a
friend)
pick
up
the
form
at
a
future
date
and
understand
the
program
—
how
it
works,
how
to
use
it,
and
how
to
check
it
to
be
certain
it's
working.
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