Texas Instruments TI-30XIIB Owners Manual - Page 14

Texas Instruments TI-30XIIB Manual

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The change sign key can be used to attach a negative sign to the mantissa and to the power-of-ten exponent. Example - Enter -4 818 ••• 10 -'0 Enter Press Display 0. 4.818 1.7;3 Tq: -4 818 00 10 =4 - -4 818 -10 A calculated result or quantity recalled from memory can be easily converted from standard display format to scientific notation. Because the rii41 key controls scientific notation when used after a keyboard entry Aeir.i only. to convert a result in standard display format to scientific notation press [X] 1 Example: 89 - 987 = 87843 = 8.7843 .• Enter Press Display 89 89 987 87843 [X] 1 87843 1. 00 [T1 8.7843 04 Data in scientific notation form may be entered intermixed with data in standard form. The calculator converts the entered data for proper calculation. Example: 3.2 x 10' + 12575.321 = 15775.321 Enter Press Display P*1 3.2 EEi O. 3200 3 32 03 12575.321 1 Q C8-J [hill r=1 1 5775 04 15775.321 Notice that the complete answer to the problem is 15775.321 and this is the number used for further calculations. Actually, the calculator internally carries all intermediate calculations and final results to 11 places. These numbers are rounded to a maximum of 5 digits for a scientific notation mantissa or an 8-digit standard display. 12

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The
change
sign
key
can
be
used
to
attach
a
negative
sign
to
the
mantissa
and
to
the
power
-of
-ten
exponent.
Example
-
Enter
-4
818
•••
10
-
'
0
Enter
Press
Display
0.
4.818
1.7;3
Tq:
-4
818
00
10
=4
—
-4
818
-10
A
calculated
result
or
quantity
recalled
from
memory
can
be
easily
converted
from
standard
display
format
to
scientific
notation.
Because
the
rii41
key
controls
scientific
notation
when
used
after
a
keyboard
entry
only.
to
convert
a
result
in
standard
display
format
to
scientific
notation
press
[X]
1
A
ei
r.i
Example:
89
-
987
=
87843
=
8.7843
.•
Enter
Press
Display
89
89
987
87843
[X]
87843
1
1.
00
[T1
8.7843
04
Data
in
scientific
notation
form
may
be
entered
intermixed
with
data
in
standard
form.
The
calculator
converts
the
entered
data
for
proper
calculation.
Example:
3.2
x
10'
+
12575.321
=
15775.321
Enter
Press
Display
P*1
O.
3.2
EEi
3200
3
32
03
12575.321
Q
C8J
-
1
5775
04
1
[hill
r=1
15775.321
Notice
that
the
complete
answer
to
the
problem
is
15775.321
and
this
is
the
number
used
for
further
calculations.
Actually,
the
calculator
internally
carries
all
intermediate
calculations
and
final
results
to
11
places.
These
numbers
are
rounded
to
a
maximum
of
5
digits
for
a
scientific
notation
mantissa
or
an
8
-digit
standard
display.
12