HP 49g Graphing Calculator - Manual (Page 37)

Mantissa-and-exponent entry
1. Enter the mantissa (and, if necessary, press © to change its sign).
2. Press d©. An “E” is displayed to indicate that the exponent follows.
3. Enter the exponent (and, if necessary, press © to chairge its sign).
4. Press
A number entered as a mantissa and exponent will only be displayed as a
mantissa and exponent if the number display mode is set to scientific or
engineering. See the next section for information on number display
modes.
Number displays
Real numbers can be displayed in one of four modes:
• Standard mode
displays numbers using full precision. All significant
digits to the right of the decimal point are shown, to a maximum of 12
digits.
® Fix mode displays numbers roimded to a user-specified number of
decimal places. A separator (conuna or period) separates groups of
three digits in real numbers greater than 999.
® Scientific mode displays a number as a mantissa—with one digit to
the left of the decimal point and a user-specified number of decimal
places—and an exponent. For example, 1234 appears as 1.23400E3 in
scientific mode with 5 decimal places.
• Engineering
mode
displays a number as a mantissa with a user-
specified number of decimal places, followed by an exponent that is a
multiple of 3. For example, 87654 appears as 87.6540E3 in engineering
mode with 4 decimal places.
The lumiber display defaults to standard mode. You can change the
display by pressing (ME). This is explained in detail on page 2-18.
For fix, scientific, and engineering modes, the maximum number of
decimal places you can specify is 11.
Basic operation Page 2-9