Texas Instruments TI-30XIIB Owners Manual - Page 16

II.,l

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When increasing the magnitude of the mantissa. you cannot shift past a 5-digit integer. When decreasing the mantissa, zeros can be added between the decimal point and the number, possibly pushing some digits out of the display. Once digits have been shifted out of the display, they cannot be returned to the display by the shifting process. Internally, the number is always retained to its full unshifted value. The normalized display is returned whenever any operation, special function, memory or equal key is pressed. To restore the display and preserve all pending operations. press XitC; twice Error Indication The display shows' Error" whenever overflow or underflow occurs or when an improper mathematical operation is requested. When this occurs. any er y. from the keyboard is not accepted until or UM is pressed. This clears the error condition and all pending operations. You must now return to the first of your problem and begin again. The error message 4 given for the following reasons. 1. Number entry or calculation result (including summation into memory) outside the range of the calculator, -±1.0 x 10-16 to -±9.9999 x 10". 2. Dividing a number by zero. 3 The mantissa is zero and NI. pressed. or al is 4 The mantissa is negative andII.,l C=17-_±.1. or [] [YJ is pressed. 5. Inverse of sine or cosine (arcsine, arccosine) when the mantissa is greater than 1. 6. Tangent of 90". 270". 100 grads. 300 grass or their rotation multiples like 450'. etc. 7. Having more than 15 open levels of parentheses with each pending operation or more than four pending operations. 8. Multiplying a number greater than the 1 x 10" by another number (decimal or integer) may cause an error condition. 14

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When
increasing
the
magnitude
of
the
mantissa.
you
cannot
shift
past
a
5
-digit
integer.
When
decreasing
the
mantissa,
zeros
can
be
added
between
the
decimal
point
and
the
number,
possibly
pushing
some
digits
out
of
the
display.
Once
digits
have
been
shifted
out
of
the
display,
they
cannot
be
returned
to
the
display
by
the
shifting
process.
Internally,
the
number
is
always
retained
to
its
full
unshifted
value.
The
normalized
display
is
returned
whenever
any
operation,
special
function,
memory
or
equal
key
is
pressed.
To
restore
the
display
and
preserve
all
pending
operations.
press
XitC;
twice
Error
Indication
The
display
shows'
Error"
whenever
overflow
or
underf
low
occurs
or
when
an
improper
mathematical
operation
is
requested.
When
this
occurs.
any
er
y
.
from
the
keyboard
is
not
accepted
until
or
UM
is
pressed.
This
clears
the
error
condition
and
all
pending
operations.
You
must
now
return
to
the
first
of
your
problem
and
begin
again.
The
error
message
4
given
for
the
following
reasons.
1.
Number
entry
or
calculation
result
(including
summation
into
memory)
outside
the
range
of
the
calculator,
-±
1.0
x
10
-16
to
-
±9.9999
x
10".
2.
Dividing
a
number
by
zero.
3
The
mantissa
is
zero
and
NI.
or
al
is
pressed.
4
The
mantissa
is
negative
and
or
[]
[YJ
is
pressed.
5.
Inverse
of
sine
or
cosine
(arcsine,
arccosine)
when
the
mantissa
is
greater
than
1.
6.
Tangent
of
90".
270".
100
grads.
300
grass
or
their
rotation
multiples
like
450'.
etc.
7.
Having
more
than
15
open
levels
of
parentheses
with
each
pending
operation
or
more
than
four
pending
operations.
8.
Multiplying
a
number
greater
than
the
1
x
10"
by
another
number
(decimal
or
integer)
may
cause
an
error
condition.
14
II.,l
C=17-_±.1.