Karnaugh maps are a tool used to simplify complex boolean expressions.

The Karnaugh map reduces the need for extensive calculations by taking advantage of humans’ pattern-recognition capability.

Karnaugh maps are used to simplify real-world logic requirements so that they can be implemented using a minimum number of physical logic gates.

The picture below shows some of the different patterns that can be identified in a Karnaugh map using four inputs:

Here is another Karnaugh Map:

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