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What kind of calculator do you mean?

If you mean handheld calculator so the purpose of its keypad is obvious, it is necessary to input data yo ant to calculate.

For software calculators it is not that simple.
I think there are two purposes for onscreen keypads of software calculators.


1. To serve people who prefer using mouse instead of keyboard
2. To help people easily understand what this particular program can do and what it can not. For example if you don't see "SQRT" button on the keypad then most probably this calculator does not provide this function.


There are also software calculators that allow to hide the keypad if you want, one example is here: http:/cccalc.excelsior-usa.com

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15y ago

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