Texas Instruments TI Programmable 57 User Manual

ll
BASIC
TROUBLESHOOTING
Even
the
most
careful
person
makes
mistakes
from
time
to
time.
Your
calculator
is
easy
and
straightforward
to
use,
but
sometimes
through
a
programming
oversight
—
even
when
you've
carefully
keyed
things
in
—
your
program
won't
work
properly.
Here
are
a
few
tips
and
things
to
look
for
in
troubleshooting
basic
programs.
Your
calculator
will
let
you
know
about
errors
in
a
program
in
one
of
several
ways.
If
at
any
point
ina
program
an
inaccurate
key
sequence
or
series
of
operations
creates
an
error
condition
(see
Appendix
C),
the
program
will
stop
and
show
you
a
flashing
display.
This
simply
means
that
you've
asked
the
calculator
to
do
something
in
a
program
that
it
couldn't
normally
do
even
from
the
keyboard.
Exceeding
the
display
limits
or
using
an
incorrect
key
sequence
will
“stop
the
music’.
In
other
cases
you
may
not
see
a
flashing
error
condition,
but
the
results
of
your
program
are
just
plain
wrong.
It's
always
good
practice
to
verily
the
accuracy
of
a
program
with
test
input
data,
whose
program
outcome
you
know.
If
yow
don't
get
the
result
expected,
it's
time
to
look
for
a
problem:
When
a
program
is
not
working
—
try
to
“think
like
the
machine”.
Go
through
your
flow
chart
(and
key
codes)
and
execute
—
blindly
—
whatever
it
says
to
do
there.
You
may
find
that
you've
inadvertently
boxed
your
program
into
some
corner,
The
SS
key
can
be
of
help
—
both
in
and
out
of
“learn”
mode,
in
tracking
just
what
may
have
gone
wrong.
_
Be
sure
you've
reset
the
calculator
wherever
you
need
to
—
to
get
back
to
the
beginning
of
the
program.
Also,
be
sure
to
turn
the
machine
OFF
and
ON
before
beginning
a
new
program
—
to
clear
everything.
—
Algebraic
Operating
System
Remember
that
all
the
power
of
the
AOS™
algebraic
entry
system
is
working
for
you
—
even
inside
programs.
All
operations
will
be
carried
out
following
the
correct
mathematical
hierarchy.
This
order
may
not
correspond
to
the
order
of
entry
you've
used
in
your
programs.
Remember
that
your
calculator
will
hold
up
to
4
pending
operations,
at
any
one
time.
If
you
have
any
doubts
about
the
order
in
which
expressions
are
being
evaluated
—
remember
that
you
can
insert
parentheses
—()
(11—to
be
certain
that
things
are
evaluated
in
the
order
you
specily.

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English