HP 48G Series Quick Start Manual page 44

Converting Units
Example: Convert 18 _atm (atmospheres) to mmHg (millimeters of
mercury).
Step 1: Create the unit object 1&_ atm.
Step 2: Convert to millimeters of mercury. Note that pressing the
left-shift (@)) before the new unit converts the previous unit
object to the new unit.
& rnnH 1: ¢6EE_mmHg
ITEELE ETGEE ETA EET
As you perform arithmetic with unit objects, the HP 48 keeps track of
the units for you. When different unit objects of the same category
are added (or subtracted) the result is automatically converted to the
units of the last unit object entered (the level 1 object).
Example: Add up the following lengths and report the answer in
centimeters: 41 mm, 19 in, 5 ft, and 12 cm
Step 1: Enter the unit objects onto the stack.
Eo,
Step 2: Add up the units. Because the level 1 object has =ras its
unit, each addition converts the total to centimeters.
1: 216. 76_cm
M CH [MH v0FT IN|
3-14 Arithmetic