Semiconductor & Computer Engineering
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Difference between revisions of "don't care"
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{{confuse|can't happen}} | {{confuse|can't happen}} | ||
| − | '''Don't care''' or '''don't care condition''' is a [[digital signal]] [[state]] designation often represented by '''X''' that indicates the actual signal value or values have no impact on the output of a circuit. Unlike [[can't happen]] conditions, don't care terms are still valid inputs however they do not influence the output value. | + | '''Don't care''' or '''don't care condition''' is a [[digital signal]] [[state]] designation often represented by '''X''' that indicates the actual signal value or values have no impact on the outcome a circuit. Don't care values can be inputs that do not affect the output of a circuit or outputs that do not matter for a specific combination of inputs. Unlike [[can't happen]] conditions, don't care terms are still valid inputs however they do not influence the output value. |
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| + | == don't care input == | ||
| + | {{empty section}} | ||
| + | == don't care output== | ||
| + | {{empty section}} | ||
== See also == | == See also == | ||
Revision as of 17:37, 15 December 2015
- Not to be confused with can't happen.
Don't care or don't care condition is a digital signal state designation often represented by X that indicates the actual signal value or values have no impact on the outcome a circuit. Don't care values can be inputs that do not affect the output of a circuit or outputs that do not matter for a specific combination of inputs. Unlike can't happen conditions, don't care terms are still valid inputs however they do not influence the output value.
don't care input
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don't care output
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See also
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