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Enter the answer and press the ENTER button > o.
If the answer was correct you will now receive another task,
>
in which the 1st sum term is hidden by a ashing segment.
Now recall to mind the number you have just memorized
>
and in this way deduce the answer.
Enter the answer and press the ENTER button
> o.
In this programme a higher diculty level results in the
described operations being solved repeatedly.
Resetting the device
If the device functions appear to you to be impaired or it does
not behave as described in these instructions you will have to
reset it. For this press the RESET button 1* carefully with a thin,
sharp object through the housing opening on the rear panel of
the device. This will return the device to its default settings.
Cleaning and care
NEVER submerse the device or its components in water or •
other uids!
Do not allow any liquids to penetrate the housing.
•
Cleaning the housing:
Clean the housing surface with a slightly damp cloth
Never use petrol, solvents or detergents that can
damage plastics!