Which of the following is a memory element?
2018
Which of the following is a memory element?
- A.
NAND gate
- B.
SR flip-flop
- C.
NOT gate
- D.
Universal gate
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Show answer & explanation
Correct answer: B
Correct answer: SR flip-flop is a memory element because it can store one bit of information using feedback. A memory element can store and retain data (state) until it is changed.
Flip-flops, such as the SR flip-flop, are bistable devices used to store one bit of information.
Combinational gates (NAND, NOT, etc.) do not by themselves store state; however, interconnecting gates (for example, cross-coupled NANDs) can form a latch which is a memory element.
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