The S-R latch composed of NAND gates is called an active low circuit because _____________(a) It is only activated by a positive level trigger(b) It is only activated by a negative level trigger(c) It is only activated by either a positive or negative level trigger(d) It is only activated by sinusoidal triggerThe question was asked during an internship interview.The doubt is from Triggering of Flip Flops in section Flip-Flops of Digital Circuits

The S-R latch composed of NAND gates is called an active low circuit b

1.	The S-R latch composed of NAND gates is called an active low circuit because _____________(a) It is only activated by a positive level trigger(b) It is only activated by a negative level trigger(c) It is only activated by either a positive or negative level trigger(d) It is only activated by sinusoidal triggerThe question was asked during an internship interview.The doubt is from Triggering of Flip Flops in section Flip-Flops of Digital Circuits
Answer» CORRECT choice is (B) It is only activated by a negative level trigger The best I can explain: Active low indicates that only an input value of 0 sets or resets the CIRCUIT.

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