HP 30b Business Professional Calculator - Manual (Page 66)

Date Calculation 58
To reset the menu items to their default values, with any item of the Date menu displayed press
:x
. With Date displayed, press
I
to reset the menu, or
O
to cancel. Press
O
again to exit the menu.
Table 8-1 Date Calculation Example
Key Display Description
:@ Opens the Date Calculation menu.
NOTE: 2 in the right of the display
represents the day of the week. 2 represents
Tuesday.
6.04
2010
I Inputs the starting date in the selected
format.
<10.
3120
10I Inputs the ending date in the selected
format.
<= Calculates the number of actual days
between the starting and ending dates.