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Section 2: Percentage and Calendar Functions 31
File name: hp 12c_user's guide_English_HDPMBF12E44 Page: 31 of 209
Printered Date: 2005/7/29 Dimension: 14.8 cm x 21 cm
Keystrokes Display
14.052004\
14.05
Keys in date and separates it from
number of days to be entered.
120gD
11,09,2004 6
The expiration date is 11 September
2004, a Saturday.
When
D
is executed as an instruction in a running program, the calculator
pauses for about 1 second to display the result, then resumes program execution.
Number of Days Between Dates
To calculate the number of days between two given dates:
1. Key in the earlier date and press \.
2. Key in the later date and press gÒ.
The answer shown in the display is the actual number of days between the two
dates, including leap days (the extra days occurring in leap years), if any. In
addition, the hp 12c also calculates the number of days between the two dates on
the basis of a 30-day month. This answer is held inside the calculator; to display it,
press
~
. Pressing
~
again will return the original answer to the display.
Example:
Simple interest calculations can be done using either the actual number
of days or the number of days counted on the basis of a 30-day month. What
would be the number of days counted each way, to be used in calculating the
simple interest accruing from June 3, 2004 to October 14, 2005
?
Assume that
you normally express dates in the month-day-year format.
Keystrokes Display
gÕ
11.09
Sets date format to month-day-year.
(Display shown assumes date remains
from preceding example.)
6.032004\
6.03
Keys in earlier date and separates it
from the later date.
10.142005gÒ
498.00
Keys in later date. Display shows
actual number of days.
~
491.00
Number of days counted on the basis
of a 30-day month.