Texas Instruments TI Programmable 57 User Manual

ee
SECTION
1:
BASIC
KEYS
AND
FUNCTIONS
ee
(=)
—
Tue
“x”
ExcHance
wits
“t’”
Key
This
is
a
special
exchange
key
that
exchanges
the
number
in
the
display
with
the
number
in
memory
7.
Memory
7
is
used
in
several
special
functions
on
your
machine
and
is
given
a
special
name:
the
“'t’’
or
“test’’
register.
The
[#3]
key
is
identical
in
function
to
the
Gad)
Mg7
key
sequence.
Apprtionat
Notes
on
MEMoRIEs:
The
8
memories
in
your
machine
are
designed
primarily
for
your
use
and
convenience
—
but
there
are
times
(particularly
in
more
complex
calculations)
where
your
machine
needs
extra
“space”
to
work
in.
In
these
cases
your
calculator
will
need
to
use
the
memories,
and
this
can
affect
numbers
you
have
stored
in
them:
We'll
mention
these
cases
here
—
and
review
them
again
as
various
special
machine
features
are
discussed,
*
When
you're
evaluating
a
complex
expression,
involving
3
or
4
levels
of
pending
operations,
memories
5
and
6
will
be
used.
*
Memory
7,
the
t
register,
will
be
used
whenever
the
[#3]
key
is
used.
*
Statistical
functions
and
trend
line
analysis
problems
(discussed
later)
may
use
memories
0,
1,
2,
3,
4,5
and
7.
*
The
[2nd]
Ml
key
sequence,
which
is
discussed
in
Chapter3,
works
with
memory
zero.
In
practice
these
memory
situations
aren't
often
a
problem
—
but
if
you're
really
“loading
up"
the
machine
with
work
to
do,
you
need
to
be
aware
of
the
fact
that
some
of
what
you
may
have
stored
in
memories
can
be
affected.
2-9

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English