Texas Instruments TI-32 User Manual page 8

Scientific notation
It is necessary to use scientific notation to enter a number less than ±
0.000000001 or greater than ± 9999999999. In this notation, the number is
entered as a mantissa multiplied by 10 raised to a certain power
(exponent), for example -3.6089 x 10
The calculator displays all numbers between ± 1 x 10
9
x 10 in standard notation. If a calculation leads to a result outside
this range, it is displayed in scientific notation. When the calculator
displays a number in scientific notation, that number is normalized, with
a single digit to the left of the decimal point.
[EXP] - Exponent entry key. When pressed during an entry, this key
indicates that the digits entered next are part of the exponent. If the
integer part of the number entered already contains more than eight
digits, the [EXP] key has no e ect. If you enter a decimal number with
more than eight digits, only the first eight are displayed when you press
[EXP] . All digits of the number are still used in the calculations.
• To enter a number in scientific notation, type the mantissa (with an
integer part less than nine digits), press [EXP] , and enter the
power of ten. The last two digits on the right of the display
indicate the exponent. For example, 320000000 can be written as
8
3.2 x 10 . Enter this number as 3.2 [EXP] 8. The display shows
3.2 08.
• To assign a negative value to the mantissa, press the [+/-] key
after entering at least one digit of the number, but before pressing
[EXP] .
• To assign a negative value to the exponent, press the [+/-] key
before, while, or after entering the exponent.
• To display a calculated value in scientific notation, press
[FD<>Sci] . The display returns to standard notation if you press
[FD<>Sci] again or perform a calculation.
-32
.
4 -E
-9
and ± 9.999999999