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HP 12c - F2230A Manual

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Section 2: Percentage and Calendar Functions 29
File name: hp 12c_user's guide_English_HDPMBF12E44 Page: 29 of 209
Printered Date: 2005/7/29 Dimension: 14.8 cm x 21 cm
To find what percentage a number is of a total, when you already know the total
number:
1. Key in the total number.
2. Press \ to separate the other number from the total number.
3. Key in the number whose percentage equivalent you wish to find.
4. Press Z.
For example, if you already knew in the preceding example that the total sales
were $7.95 million and you wanted to find what percentage of that total occurred
in Europe:
Keystrokes Display
7.95\
7.95
Keys in the total amount and separates
it from the next number.
2.36
2.36
Keys in 2.36 to find what percentage
it is of the number in the display.
Z
29.69
Europe had nearly 30% of the total
sales.
Calendar Functions
The calendar functions provided by the hp 12c —
D
and
Ò
—
can handle
dates from October 15, 1582 through November 25, 4046.
Date Format
For each of the calendar functions
—
and also for bond calculations (
E
and
S
)
—
the calculator uses one of two date formats. The date format is used to
interpret dates when they are keyed into the calculator as well as for displaying
dates.
Month-Day-Year.
To set the date format to month-day-year, press
gÕ
. To
key in a date with this format in effect:
1. Key in the one or two digits of the month.
2. Press the decimal point key (.).
3. Key in the two digits of the day.
4. Key in the four digits of the year.
Dates are displayed in the same format.
For example, to key in April 7, 2004:
Keystrokes Display
4.072004
4.072004
… 29 …


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