What type of logic element uses a control relay?

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Multiple Choice

What type of logic element uses a control relay?

Storing a past condition is what memory logic provides. A control relay is used to create a latch that stays energized after being triggered, so the circuit “remembers” that moment even when the initiating input is removed. This memory behavior is what defines a memory element, which is why it’s the best choice. The other options perform actions based on current inputs or timing (timing delays, counting pulses, or comparing signals) and don’t inherently retain a previous state without additional wiring.

Storing a past condition is what memory logic provides. A control relay is used to create a latch that stays energized after being triggered, so the circuit “remembers” that moment even when the initiating input is removed. This memory behavior is what defines a memory element, which is why it’s the best choice. The other options perform actions based on current inputs or timing (timing delays, counting pulses, or comparing signals) and don’t inherently retain a previous state without additional wiring.

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