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This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.
1. |
The characteristic equation of D-flip-flop implies that ___________ |
A. | The next state is dependent on previous state |
B. | The next state is dependent on present state |
C. | The next state is independent of previous state |
D. | The next state is independent of present state |
Answer» E. | |
2. |
Why do the D flip-flops receive its designation or nomenclature as Data Flip-flops ? |
A. | Due to its capability to receive data from flip-flop |
B. | Due to its capability to store data in flip-flop |
C. | Due to its capability to transfer the data into flip-flop |
D. | Due to erasing the data from the flip-flop |
Answer» D. Due to erasing the data from the flip-flop | |
3. |
With regard to a D latch ________ |
A. | The Q output follows the D input when EN is LOW |
B. | The Q output is opposite the D input when EN is LOW |
C. | The Q output follows the D input when EN is HIGH |
D. | The Q output is HIGH regardless of EN s input state |
Answer» D. The Q output is HIGH regardless of EN s input state | |
4. |
Which statement describes the BEST operation of a negative-edge-triggered D flip-flop? |
A. | The logic level at the D input is transferred to Q on NGT of CLK |
B. | The Q output is ALWAYS identical to the CLK input if the D input is HIGH |
C. | The Q output is ALWAYS identical to the D input when CLK = PGT |
D. | The Q output is ALWAYS identical to the D input |
Answer» B. The Q output is ALWAYS identical to the CLK input if the D input is HIGH | |
5. |
In D flip-flop, if clock input is HIGH & D=1, then output is ___________ |
A. | 0 |
B. | 1 |
C. | Forbidden |
D. | Toggle |
Answer» B. 1 | |
6. |
In D flip-flop, if clock input is LOW, the D input ___________ |
A. | Has no effect |
B. | Goes high |
C. | Goes low |
D. | Has effect |
Answer» B. Goes high | |
7. |
In D flip-flop, D stands for _____________ |
A. | Distant |
B. | Data |
C. | Desired |
D. | Delay |
Answer» C. Desired | |