HP -225 Owner's Manual page 32

Scientific calculator
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To specify scientific notation:
1. Press [DisP], then {SC}.
2. Key in the number of digits to the right of the decimal point.*
For 10 or 11 places, key in .0 or .1.
Engineering Notation. Engineering notation expresses a number as
a mantissa with one, two, or three digits to the left of the decimal
point, multiplied by 10 raised to a power divisible evenly by 3.
Significant
,
digits after
S)l(gr:):efnt
first digit
P
f'_'%
/— 12345678981 2E-12
——
Sign
of
mantissa
Mantissa
To specify engineering notation:
1. Press @(DisP], then {EN}.
Power of 10
(multiples of 3)
2. Key in the number of significant digits after the first digit.* For
10 or 11 digits, key in .0 or .1.
* The maximum number of decimal places that can be displayed is 9. However, {SC} (or
{EN}) 10 or 11 retains the 10th and 11th digits when the {RN} (round) function is used.
24
1: Getting Started

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