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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.
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).
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:
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.
In Chapter 6, section 6.4 "Karnaugh map representation of Boolean functions" they begin with: "The Karnaugh map 1 [1 Karnaugh 1953] is one of the most powerful tools in the repertory of the logic designer. ... A Karnaugh map may be regarded either as a pictorial form of a truth table or as an extension of the Venn diagram." [13] (pp 103–104)
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
Digital Circuits/Karnaugh Maps; Usage on en.wikiversity.org Digital Electronics/Lecture Karnaugh Map Reductions; Usage on eu.wikipedia.org Lankide:PrietoI/Proba orria; Karnaughen mapa; Usage on fa.wikipedia.org جدول کارنو; Usage on gl.wikipedia.org Diagrama de Venn; Usage on it.wikipedia.org Mappa di Karnaugh; Bell Laboratories; Usage ...
In Boolean algebra, Petrick's method [1] (also known as Petrick function [2] or branch-and-bound method) is a technique described by Stanley R. Petrick (1931–2006) [3] [4] in 1956 [5] [6] for determining all minimum sum-of-products solutions from a prime implicant chart. [7]