* added other possible cases
* added test for correct output of truth table
* updating DIRECTORY.md
* Update nor_gate.py
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Co-authored-by: = <=>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
Boolean Algebra
Boolean algebra is used to do arithmetic with bits of values True (1) or False (0). There are three basic operations: 'and', 'or' and 'not'.