Texas Instruments TI Programmable 57 User Manual

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SECTION
1:
BASIC
KEYS
AND
FUNCTIONS
ooo
An
example
on
the
use
of
the
memories:
Let's
say
that:
a=10.3
(25—1.7)
b=15a+6
c=20b,
and
you
need
to
find
c.
Press
DispLay/COMMENTS
10.3600025
I
Calculate
and
store
a
Toe
239.99
1
239.99
astored
in
memory
|
Sb
ROmleS6e
3605.85
2
$605.85
b
stored
in
memory
2
20
Ga)
Ret)
2
(=)
72117.
The
value
of
c.
Memory
ARITHMETIC
In
addition
to
the
basic
memory
keys,
there
are
a
series
of
keys
that
let
you
perform
arithmetic
on
the
numbers
stored
in
memory
without
affecting
other
calculations
in
progress:
0
n
—
The
Sum
Key
—
allows
you
to
algebraically
add
whatever
number
is
in
the
display
directly
to
the
number
stored
in
any
memory.
(This
doesn't
affect
any
calculations
in
progress.)
The
result
of
the
addition
stays
stored
in
the
memory.
Note:
This
process
is
different
from
what
happens
when
you
use
the
[5
key.
The
Sf)
n
operation
clears
out
the
number
in
the
memory,
and
replaces
it
with
the
number
in
the
display.
(The
display
is
not
affected
by
this
operation.)
{iv}
SUM
n
—
The
Subtract
key
sequence,
subtracts
the
number
in
the
display
from
the
number
in
memory
n.
The
result
stays
stored
in
memory
n.
(The
display
does
not
change.)
Win
—
The
“Multiply”
or
Product
key
sequence,
multiplies
the
number
in
memory
n
by
what's
in
the
display.
The
product
stays
stored
in
memory
n.
(The
display
does
not
change.)
[inv]
(2nd)
[ln
—
The
“Divide”
or
Quotient
key
sequence,
divides
the
number
in
memory
n
by
the
number
in
the
display.
The
quotient
stays
stored
in
memory
n.
(Note
the
[8¥)
and
2d)
may
be
pressed
in
either
order
for
this
sequence:
[ad]
(INV)
In
for
any
"memory
divide”
calculation.)
The
display
does
not
change
during
this
operation.
[and]
Hin
—
The
Exchange
key
sequence
just
‘swaps’
the
number
in
memory
n
with
the
number
in
the
display.
(The
display
value
gets
stored
in
memory
n,
while
the
number
stored
in
memory
n
is
displayed.)
—————
aan
2-8

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English