HP 48g Graphing Calculator - Manual (Page 361)

User-Defined
Units
The Equation Library provides four user-defined units: “gmol”
(gram-moles, mol), “Ibmol” (pound-moles, approximately 454
mol), ‘"rpm” (revolutions per minute, 1/rnin), and “dB” (decibels,
dimensionless). You can use their menu keys as typing aids. To fully
use these units, add them to the custom menu. (User-defined units are
described on page 10-14.)
Example: Put the Equation Library units in a custom menu.
Step 1: Enter this list of unit objects (one for each unit):
C l ^ g m o l l ^ l b c i u l l _ r p n l _ d B J .
023OfEQ LIB) UTILs iwrn
1 |3Q
G M O L
(SPC)
l O Q L B M o (spg
^ OQ
1 OQ
PPM
D B
(SPC)
fENTER 1
25
Step 2: Store this in the custom menu and display the menu.
(Custom menus are described on page 30-1.)
(5)iMODES] MEHLI MEHLi
You get the custom menu cit any time by pressing fCST ). The following
examples show how to use the user-defined units in the custom menu:
■ Press
G M O L
to add units to the number you’re entering or to
append units to the unit numerator of the object in level 1.
■ Press
G M O L
object in level 1.
■ Press (4^
G M O L
to append units to the unit denominator of the
to convert the unit object in level 1 to “gmol.”
The Equation Library 25-15