Calculator Menu
This menu is a simple calculator.
The calculator screen consist of following:
A. Select figures with buttons.
B. Calculated result.
C. Select operators with the turning knob.
D. Use the turning knob to select exit
Then press the turning knob to accept.
E. The button become green when the turning
knob is active.
Gravity Menu
This menu is currently not active.
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3 - Description
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