In a negative-logic circuit, what level is used to represent a logic 0?

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Multiple Choice

In a negative-logic circuit, what level is used to represent a logic 0?

In negative logic, the meaning of logic values is inverted compared to positive logic. The level that denotes a logic 0 is the high voltage level, while the low voltage level denotes a logic 1. So a high level represents 0 because the interpretation of the signal is flipped: what would be considered true/1 in positive logic is represented by the opposite, and what would be 0 is represented by the high level. A practical way to see this is with active-low signals: the input is considered at logic 0 when it is at a high level, and bringing it down to a low level changes the interpretation to logic 1.

In negative logic, the meaning of logic values is inverted compared to positive logic. The level that denotes a logic 0 is the high voltage level, while the low voltage level denotes a logic 1. So a high level represents 0 because the interpretation of the signal is flipped: what would be considered true/1 in positive logic is represented by the opposite, and what would be 0 is represented by the high level. A practical way to see this is with active-low signals: the input is considered at logic 0 when it is at a high level, and bringing it down to a low level changes the interpretation to logic 1.

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