MC
Clears the value currently stored in memory.
±
Changes the sign of the displayed number.
Clears one function or one digit from the screen and returns the calculator
to digit entry mode. Hold down to clear all of the digits and operations and
display a zero.
Exits the calculator and returns to the home screen.
Countdown Timer
This timer counts down for a specified amount of time. It beeps, using the
volume set for alerts, when that amount of time has elapsed.
1. Select Menu → Tools → Countdown Timer .
2. Press
to Set .
3. Press
up or down to set the hours, minutes, and seconds. To move
the cursor, press
58
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left or right.
Tools