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Which of the following describes the operation of a positive edge-triggered D flip-flop?
- a)If both inputs are HIGH, the output will toggle
- b)The output will follow the input on the leading edge of the clock
- c)When both inputs are LOW, an invalid state exists
- d)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock
Correct answer is option 'B'. Can you explain this answer?
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Which of the following describes the operation of a positive edge-trig...
Operation of a positive edge-triggered D flip-flop:
A positive edge-triggered D flip-flop is a type of sequential logic circuit that stores and outputs data based on the rising edge (leading edge) of a clock signal. The flip-flop has two inputs - a data input (D) and a clock input (CLK), and one output (Q). The operation of a positive edge-triggered D flip-flop can be described as follows:
1. Data Input (D):
- The data input (D) represents the value that we want to store in the flip-flop.
- It can be either a logic HIGH or a logic LOW, denoted as '1' or '0', respectively.
2. Clock Input (CLK):
- The clock input (CLK) is a periodic signal that controls the timing of the flip-flop.
- The flip-flop stores the input data (D) at the rising edge of the clock signal.
- The rising edge is the transition from a logic LOW ('0') to a logic HIGH ('1').
3. Output (Q):
- The output (Q) represents the stored value in the flip-flop.
- It can be either a logic HIGH or a logic LOW, depending on the input data and the clock signal.
4. Operation:
- At every rising edge of the clock signal, the input data (D) is sampled and stored in the flip-flop.
- The output (Q) follows the input (D) only at the leading edge of the clock signal.
- This means that if the input data (D) changes before the rising edge of the clock, the output (Q) will reflect the new input value.
- However, if the input data (D) changes after the rising edge of the clock, the output (Q) will remain unchanged until the next rising edge of the clock.
5. Invalid State:
- When both inputs (D and CLK) are at a logic LOW ('0'), an invalid state exists.
- In this state, the behavior of the flip-flop is undefined, and the output (Q) may be unpredictable.
Therefore, the correct answer is option 'B': The output will follow the input on the leading edge of the clock.
A positive edge-triggered D flip-flop is a type of sequential logic circuit that stores and outputs data based on the rising edge (leading edge) of a clock signal. The flip-flop has two inputs - a data input (D) and a clock input (CLK), and one output (Q). The operation of a positive edge-triggered D flip-flop can be described as follows:
1. Data Input (D):
- The data input (D) represents the value that we want to store in the flip-flop.
- It can be either a logic HIGH or a logic LOW, denoted as '1' or '0', respectively.
2. Clock Input (CLK):
- The clock input (CLK) is a periodic signal that controls the timing of the flip-flop.
- The flip-flop stores the input data (D) at the rising edge of the clock signal.
- The rising edge is the transition from a logic LOW ('0') to a logic HIGH ('1').
3. Output (Q):
- The output (Q) represents the stored value in the flip-flop.
- It can be either a logic HIGH or a logic LOW, depending on the input data and the clock signal.
4. Operation:
- At every rising edge of the clock signal, the input data (D) is sampled and stored in the flip-flop.
- The output (Q) follows the input (D) only at the leading edge of the clock signal.
- This means that if the input data (D) changes before the rising edge of the clock, the output (Q) will reflect the new input value.
- However, if the input data (D) changes after the rising edge of the clock, the output (Q) will remain unchanged until the next rising edge of the clock.
5. Invalid State:
- When both inputs (D and CLK) are at a logic LOW ('0'), an invalid state exists.
- In this state, the behavior of the flip-flop is undefined, and the output (Q) may be unpredictable.
Therefore, the correct answer is option 'B': The output will follow the input on the leading edge of the clock.
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Which of the following describes the operation of a positive edge-trig...
Edge-triggered flip-flop means the device will change state during the rising or falling edge of the clock pulse. The main phenomenon of the D flip-flop is that the o/p will follow the i/p when the enable pin is HIGH.
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Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer?
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Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer?.
Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer?.
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ample number of questions to practice Which of the following describes the operation of a positive edge-triggered D flip-flop?a)If both inputs are HIGH, the output will toggleb)The output will follow the input on the leading edge of the clockc)When both inputs are LOW, an invalid state existsd)The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clockCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice GATE tests.
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