In digital logic, a don't-care term (abbreviated DC, historically also known as redundancies, irrelevancies, optional entries, invalid combinations, vacuous combinations, forbidden combinations, unused states or logical remainders) for a boolean function is an input-sequence (a series of bits) for which the function output does not matter. An input that is known never to occur is a can't-happen term.
In digital logic, a don't-care term (abbreviated DC, historically also known as redundancies, irrelevancies, optional entries, invalid combinations, vacuous combinations, forbidden combinations, unused states or logical remainders) for a boolean function is an input-sequence (a series of bits) for which the function output does not matter. An input that is known never to occur is a can't-happen term.
Source: Wikipedia "Don't-care term" · CC BY-SA 4.0
Share this article: X · Bluesky