NPTEL Digital Circuits Week 6 Assignment Answers 2024
1. The state transition of T flip-flop from 0 to 1 requires
A) 0 at T-input
B) 1 at T-Input
C) 01 sequence at T-input
D) None
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2.
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3.
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4.
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5. Which of the following is an example of a sequential circuit?
A) Half Adder
B) Full Adder
C) Multiplexer
D) Flip-Flop
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6. What is a characteristic of a sequential circuit?
A) It has no memory elements.
B) Its output depends only on the current inputs.
C) Its output depends on both the current inputs and the previous state of the output.
D) It has no clock signal.
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7. In a JK flip-flop, what is the output when both J and K inputs are 1?
A) The output toggles.
B) The output is set to 0.
C) The output is set to 1.
D) The output remains unchanged
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8. What is the output state of an SR flip-flop when both S (Set) and R (Reset) inputs are 0?
A) Set (Q=1)
B) Reset (Q=0)
C) No change in output (Q remains the same)
D) Output toggles
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9. In an SR flip-flop, what happens if both S and R inputs are set to 1 simultaneously?
A) The output is set to 1.
B) The output is reset to 0.
C) The output is undefined or in an invalid state.
D) The output toggles between 0 and 1.
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10. What is the primary difference between a latch and a flip-flop?
A) Latches are edge-triggered, while flip-flops are level-triggered.
B) Latches are level-triggered, while flip-flops are edge-triggered.
C) Latches store multiple bits, while flip-flops store a single bit.
D) Both latch and a flip-flop are edge triggered
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11. What is the primary function of a demultiplexer?
A) To combine multiple input signals into a single output.
B) To convert analog signals into digital signals.
C) To route a single input signal to one of many output lines.
D) To amplify input signals.
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12. How many select lines are required for a 1-to-16 demultiplexer?
A) 2
B) 3
C) 4
D) 5
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13.
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14.
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15. How many SR latches needed to construct a master slave SR flipflop?
A) 1
B) 2
C) 3
D) 4
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