Minimal Key Calculator

[PANAMATIK]

(03-13-2015 11:14 AM)Paul Dale Wrote:  The way the question is posed "least number of keys" would imply a minimum of two keys and disallow none or one. In this case two keys are clearly enough -- the morse code key and a power button

- Pauli

Don't be overhasty. Perhaps some mathematician will show a solution with a negative number of keys. Might be useful for entering imaginary numbers. Is minus infinity keys less than zero keys?

Bernhard