Texas Instruments TI Programmable 57

PROGRAM EDITING:
KEY CODES
Your
calculator
is
equipped
with
a'series
of
keys
that
allow
you
to
alter
your
programs
easily
and
rapidly
to
fit
new
problem
solving
situations,
or
to
correct
any
errors
you
may
have
in
your
program.
These
editing
features
of
the
calculator
let
you
get
to
any
point
in
a
program,
analyze
it,
change.a
step,
add
or
delete
steps,
or
leave
“blanks''
in
the
program
for
later
use:
As
was
mentioned
earlier
in
this
chapter,
your
calculator
stores
the
steps
in
any
program
as
a
sequence
of
key
codes.
These
codes
are
arrived
at
in
a
pretty
straightforward
fashion.
The
code
for
any
number
key
on
the
keyboard
is
just
the
number
itself
(00
through
09).
The
key
code
for
any
first
function
key
is
a
two
digit
number:
The
first
digit
is
the
row
the
key
is
in,
the
second
digit
is
its
column.
(Rows
are
numbered
from
|
to
8
top
to
bottom,
columns
from
|
to
5
left
to
right,
as
shown
in
the
diagram.)
For example, the key code for the [S10]
instruction is 32, [#4] is 23. For second
functions, just add 5 to the column
number — with the rightmost column
being indicated by a zero. The code
Hows
for
[2nd]
MI
is
28,
the
code
for
; is 30
J 2 3 4 5 Columns for First Functions
6
a
F
9
60
Columns
for
Second
Functions
When
you
first
enter
a
program
in
“learn”
mode,
you
won't
see
the
key
codes,
because
the
program
memory
display
always
moves
ahead
to
the
next
step.
To
see
the
codes
in
any
program,
you
need
to
enter
the
program
first,
then
go
back
and
examine
the
codes.
Here's
how
to
do
this:
3-13