HP 48G Series User Manual

Lesson 11: Arithmetic including Units
You needn’t calculate with numbers separated from their natural
measurement units if you use the HP 48. A unit object is a real
number connected to a L measurement unit with an underscore
allows you to ‘attach units to numbers and then do arithmetic with the
resulting unit objects. As long as you attach the correct units, it will
keep track of the units as you calculate and report the answer in any
appropriate measurement you want.
Example: Create the unit object ZZ kgm 2s,
Step 1: Enter the Units Catalog, key in the value and append the
first unit.
(CLEAR) @B (UNITS) 1: 32_ka
32
oz
ED
|
KS
|
3
|
LE
|
02
[SLUG]
LET
|
Step 2: Append the second unit. This requires that you return to
the main Units Catalog screen and select a different category.
Note that appending a unit to an object with a unit already
attached implies a multiplication of the units.
l: 32 _ka¥m™e
EE EEEIEE NE EE ITE
Step 3: Append the remaining units in the denominator. Note
that pressing the right-shift (((»)) before the desired unit
implies a diviston—that you want to append the unit in the
denominator instead of the numerator of the compound unit.
1: I _kaEm Esse
EEE ENEELETIEEETE
Arithmetic 3-13

HP 48G Series Specifications

General

Model	HP 48G Series
Type	Graphing Calculator
Display Type	LCD
Display Size	131x64 pixels
Programming Language	RPL (Reverse Polish Lisp)
Memory	32 KB RAM
Processor	Saturn
Power Supply	3x AAA batteries
Connectivity	Infrared (IR)