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Unit objects, Overview of the units application, Units and unit objects – HP 48g Graphing Calculator User Manual

Page 119

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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

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