HP 20B User Manual

Business Problems
55
Note: although the example in Table 8-2 calls for no compounding, you may specify the number of compounding periods used
in calculations with the Nb Period item in the %Change sub-menu. Nb Period is the number of compounding periods used in
calculations between the old value and new value. The default is 1 , but to change the setting, key in a number with Nb Period
displayed, followed by I.
After calculating the example above with no compounding, say, for example, you wish to calculate the percent change over
six compounding periods:
Table 8-3 Percent Change Example with Compounding
Keys Display Description
The current value of %Change for the given data.
<6I
Inputs 6 for the number of compounding periods.
>=
Calculates the percent change between the old value
and the new value over six compounding periods.
3. What is 30% of 80?
Table 8-4 Part % of Total Example
Keys Display Description
:#
Opens the %calc menu .
<<
Scrolls to the Part %Total menu item.
I
Opens the Part as %Total sub-menu.
80I
Inputs 80 for Total .
<30I
Inputs 30 for Part.
<=
Calculates the value of Part%Total for the given data.
To reset the menu items to their default values, with any item of the %calc menu displayed press :x. Press > or
< to scroll until %Calc displays and press Ito reset the menu, or O to cancel. Press O to exit the menu.

HP 20B Specifications

General

Type	Financial
Cover	-
Form factor	Pocket
Control type	Buttons
Product color	Black
Digits	12 digits
Display type	LCD
Display tilting	No
Display number of lines	2 lines
Battery type	CR2032
Power source	Battery
Auto power off	Yes
Number of batteries supported	2
Memory registers	110

Weight and Dimensions

Depth	149.2 mm
Width	77 mm
Height	16 mm
Weight	37.5 g