HP 300s Scientific Calculator - Manual (Page 8)

2
• The cursor key is marked with four arrows
indicating direction. In this User Guide, cursor
key operation is indicated as
 ,  ,  ,
and  .
• The displays and illustrations (such as key markings) shown in
this User Guide are for illustrative purposes only, and may
differ somewhat from the actual items they represent.
• The contents of this manual are subject to change without
notice.
•  : Specify degree for the angle unit.
 : Specify radian for the angle unit.
Initializing the Calculator
Perform the following procedure when you want to initialize
the calculator and return the calculation mode and setup to
their initial default settings. Note that this operation also clears
all data currently in calculator memory.
  (CLR)  (All)  (Yes)
• For information about calculation modes and setup
settings, see “Calculation Modes and Calculator Setup.”
• For information about memory, see “Using Calculator
Memory.”
Safety Precautions
Before using the calculator, please read the following safety
precautions carefully. Keep this manual handy so that you can
refer to it when needed.
The representations of the display and the keys in this manual
are for explanatory purposes only and may not exactly match
what you see on the calculator.
Caution
This symbol indicates that there is a risk of injury or damage if
the specified safety precautions are ignored.
Battery
• Keep battery out of reach of children. If a battery is
swallowed, seek urgent medical advice.
• Do not charge, attempt to disable, short circuit, or apply
heat to the battery.
• When installing a new battery, orient it such that the
positive sign is facing upwards.
• Use only the battery specified in this manual.