Description of functions
on
Off
On- and off-switch
All working registers are automatically cleared when calculator is turned on.
The calculator is ready for operation.
Clear
This key clears all working registers (total clear).
Clearance is necessary before adding or subtracting.
To clear a wrong entered number, depress Cl-key befor completing a function.
Calculation keys
The calculator works on the commercial calculating principle: For additions and subtractions
the desired operation is selected after entering the number.
Chain multiplications and divisions and their combinations can be made directly without
subtotals (short-cut calculation method).
Result key
For totals of multiplications and divisions depress result key.
If an addition or a subtraction follows, then the calculator most not be cleared.
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