Prime-implicant meaning

(electrical engineering) A group of related 1's (implicant) on a Karnaugh map which is not subsumed by any other implicant in the same map. Equivalently (in terms of Boolean algebra), a product term which is a "minimal" implicant in the sense that removing any of its literals will yield a product term which is not an implicant (but beware: on a Karnaugh map it would appear "maximal").
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(electrical engineering) A group of related 0's (implicant) on a Karnaugh map which is not subsumed by any other implicant (of 0's) in the same map.
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Origin of prime-implicant

  • An implicant (Boolean product term) which is called "prime" because none of its proper factors is itself an implicant.
    From Wiktionary