Texas Instruments TI Programmable 57 User Manual

A FIRST LOOK AT THE
TI PROGRAMMABLE 57
How Does Ir Worx?
Simple!
For
starters,
take
out
the
calculator
and
check
out
the
“heit’’
of
this
little
device.
Light,
isn't
it?
That's
because
most
of
the
important
things
inside
this
calculator
are
handled
with
a
device
that
the folks at TI call a “SOAP” bar.
Now,
turn
it
on!
A
zero
in
the
display
tells
you
that
you're
ready
for
action.
(If
the
zero doesn't
come on,
or
the
display
seems
to
be
doing
‘funny’
things,
don’t
worry.
The
battery
just
needs
charging.
Turn
the
machine
off,
plug
in
your
charger
and
wait
a
few
minutes;
then
you'll
be
set
to
go.)
Let's get right into it with a simple example.
Imagine this situation:
You've just won a rather weird award from a major radio station. You'll
be given 2¢! This money will be doubled every day for three weeks (21
days).
OR
—
you
can
have
$5000
in
cash
immediately.
You
have
two
minutes to make a decision — the announcer is waiting. (This is actually
an “old and classic” problem. Watch how your calculator helps.)
Basically, you can have your machine read out for you just how your
money will ‘grow’. Here's how:
Over on the upper left hand
corner of your machine, one row
down from the top, is a key that
is the real “jewel”:
it's
labelled
ke)
———————>
This is the "learn" key, and when you press it one time, your calculator
begins to learn and remember whatever you put in next. When you press
{RN} again, you're telling the calculator that you've “taught” it everything
you
want
it
to
know
for
now.
The
calculator
stops
learning
at
this
point,
but remembers all the steps you taught it. (The key is like an
ON/OFF" button for teaching your calculator to do things.)
So press [RN], (At this point your display changes to 00 00.) Now, if you
decide to take the “2¢ option’ on the contest, you'll be doubling your
money for 2] days, and you want to watch it grow. To do this, Press
x2 =).
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Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English