Unit objects, Overview of the units application, Units and unit objects – HP 48g Graphing Calculator User Manual
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10
Unit Objects
The Units application contains a catalog of 147 units that you
can combine with real numbers to create unii objects. The Units
application lets you do the following:
m Convert units. For example, you can convert the unit object IE:
to i;
Factor units. For example, you can factor
and return ;20
_W with respect to
Calculate with units. For example, you can add U
10._r'-iph and return 24,. 67.....
to
10
Overview of the Units Application
The Units application consists of two menus:
■ The UNITS Catalog menu (fr^fUNITS)), which contains the HP 48
units organized by subject. This menu eirables you to create unit
objects, and to convert between related units in the catalog.
The UNITS Command menu ( f ^ D f U N I T S ) ) , which contains
commands for converting units and for managing unit objects.
Units and Unit Objects
The Units application is based on the International System of Units
(SI). The International System specifies seven base units:
tm
(meter),
kg (kilogram), (second), fl (ampere), l< (kelvins), cd (candela), and
nol (mole). The HP 48 makes use of two additional base units: r
(radian) and ::ir (steradian). The UNITS Catalog menu contains these
nine base units, and 141 compound units derived from the base units.
Unit Objects 10-1