Texas Instruments TI Programmable 57 User Manual

SECTION 1: BASIC
KEYS AND FUNCTIONS
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Your
calculator
operates
with
a
full
floating
decimal
point,
and
numbers
are
entered
into
the
machine
with
the
data
entry
keys
(o]-
1-764).
As
you
enter
any
number,
the
decimal
point
stays
to
the
right
of
your
entry
until
the
decimal
point
key
((=)
is
pressed.
After
pressing
the
decimal
key,
the
fractional
part
of
the
number
is
keyed
in,
and
the
decimal
point
floats
to
the
left
with
it.
To
change
the
sign
of
a
number
in
the
display,
just
push
the
change
sign
key
-Jonce.
(Pressing
F5
again
changes
the
sign
back
again.)
C+ (=) (6) 2] anv [=] - Basic Oreration Keys
Basic
arithmetic
is
handled
with
the
5
basic
operation
keys:
[+]
[=]
[)
(Jand
().
Your
calculator
is
equipped
with
a
simple
and
powerful
entry
system
—
the
AOS™
entry
method.
This
entry
system
makes
problem
solution
exceptionally
easy.
You
just
key
in
the
problem
the
way
it's
written,
press[=],
and
get
your
result.
The
amazing
feature
of
the
AOS
system
is
that
it
automatically
sorts
out
mixed
operations
in
a
problem
for
you,
and
applies
them
in
the
correct
order
as
it
calculates
your
result.
(We'll
say
more
about
the
AOS
entry
system
in
the
next
section.)
When
you
press
the
[=]
key,
all
pending
operations
(things
waiting
to
happen
inside
your
calculator)
are:
completed.
You
get
your
result,
and
the
calculator
is
cleared
—
ready
to
start
on
the
next
problem.
Example: Calculate 15 + 7X31 —4=?
Press Disptay/CoMMENTS
187476031
Ei4e) 228.
Note:
The
AOS
system
of
entry
makes
it
easy
to
get
the
right
answer
in
this
example,
and
not
all
calculators
have
it.

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English