Operation Manual

1-10 Operating the TI
.
82
8201OPER.DOC TI-82, Chapter 1, English Bob Fedorisko Revised: 02/09/01 12:18 PM Printed:
02/09/01 12:35 PM Page 10 of 22
TI-82 Modes
The TI
.
82 has seven MODE settings. Three are related to how numeric entries are
interpreted or displayed and four are related to how graphs appear in the display.
Modes are set on the MODE screen (page 1
.
9).
Normal, Sci, Eng
Notation formats affect only how an answer is displayed on the Home
screen. Numeric answers can display with up to 10 digits and a two-digit
exponent. You can enter a number in any format.
Normal
display format is the way in which we usually express numbers,
with digits to the left and right of the decimal, as in
12346.67
.
Sci
(scientific) notation expresses numbers in two parts. The significant
digits display with one digit to the left of the decimal. The appropriate
power of 10 displays to the right of
E
, as in
1.234667
E
4
.
Eng
(engineering) notation is similar to scientific notation. However, the
number may have one, two, or three digits before the decimal, and the
power-of-10 exponent is a multiple of three, as in
12.34667
E
3
.
Note: If you select normal display format, but the answer cannot display in
10 digits or the absolute value is less than .001, the TI
.
82 changes to
scientific notation for that answer only.
Float, Fix
Decimal settings affect only how an answer is displayed on the Home
screen. They apply to all three notation display formats. You can enter a
number in any format.
Float
(floating) decimal setting displays up to 10 digits, plus the sign and
decimal.
The fixed decimal setting displays the selected number of digits (
0
to
9
) to
the right of the decimal. Place the cursor on the number of decimal digits
you want and press
Í
.