Texas Instruments TI Programmable 57 User Manual

Sr
aa
SECTION
2:
ADVANCED/
“SLIDE
RULE”
KEYS
el
—“Pr’
Key
SEQUENCE
The
(2x)
Mill
key
sequence
displays
the
first
8
digits
of
7.
(Eleven
digits
are
entered
into
the
calculator
—
8
correctly
rounded
digits
are
displayed.)
The
number
you'll
see
displayed
is:
3.1415927.
This
key
sequence
displays
7
immediately,
doesn't
affect
calculations
in
progress,
and
can
be
used
anytime
in
a
calculation.
[2nd]
(EG
—
Assovure
Varue
Key
Sequence
When
this
key
sequence
is
pressed,
the
sign
of
the
number
in
the
display
(x)
is
made
positive.
This
feature
comes
in
handy
in
a
variety
of
calculating
(and
programming)
situations.
When
(ad)
Ellis
pressed:
If
the
sign
of
the
number
in
the
display
is
negative,
it's
changed
to
positive.
If
the
sign
of
the
number
in
the
display
is
positive,
things
are
left
alone.
This
key
can
be
used
any
time
ina
calculation,
and
doesn't
affect
calculations
in
progress.
Note
that
several
keys
on
the
keyboard
use
the
letter
"x"
as
part
of
their
marking.
The
"x"
on
these
keys
just
means
“the
number
in
the
display”.
[x2]
—
Square,
Square
Root
anv
Reciprocat
Keys
These
3
easily
accessible
keys
are
essentials
for
speedily
handling
a
variety
of
algebraic
and
equation
solving
situations.
All
three
of
these
keys
act
immediately
on
the
number
in
the
display
(x),
and
don't
affect
calculations
in
progress.
[=#]—
The
Square
Key
—
calculates
the
square
of
the
number
in
the
display
(multiplies
the
displayed
number
by
itself).
—
Square
Root
Key
—
Calculates
the
square
root
of
the
number
in
the
display.
The
square
root
of
a
number
(say
x)
is
another
number
(labelled
\/x),
such
that:
(Vx)
x
(0)
=x
—
The
Reciprocal
Key
—
Divides
the
displayed
number
into
one.

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English