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Those 16 numbers correspond to the minterms of Image:K-map minterms.svg used in a 4-variable [[:en:Karnaugh map File usage No pages on the English Wikipedia use this file (pages on other projects are not listed).
The Karnaugh map is therefore arranged in a 4 × 4 grid. The row and column indices (shown across the top and down the left side of the Karnaugh map) are ordered in Gray code rather than binary numerical order. Gray code ensures that only one variable changes between each pair of adjacent cells.
English: A 4 variable, 4x4 Karnaugh map. Date: 22 December 2006: Source: Own work This W3C-unspecified vector image was created with Inkscape. Author: en:User:Cburnett:
The following 16 pages use this file: Algebraic normal form; Beta normal form; Blake canonical form; Canonical normal form; Conjunctive normal form; Disjunctive normal form
While this example was simplified by applying normal algebraic methods [= (′ +)], in less obvious cases a convenient method for finding minimal PoS/SoP forms of a function with up to four variables is using a Karnaugh map. The Quine–McCluskey algorithm can solve slightly larger problems.
Gray codes are also used in labelling the axes of Karnaugh maps ... // The loop variable // Put ... and do not exist for n = 3 or 4. An example of an 8-bit ...
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