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Fill in the timing diagram for a falling-edge-triggered S-R flip-flop. Assume Q begins at 0. Clock R.

Fill in the timing diagram for a falling-edge-triggered S-R flip-flop. Assume Q begins at 0. Clock R.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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### Educational Website Content #### Timing Diagram for a Falling-Edge-Triggered S-R Flip-Flop **Objective:** Understand how to interpret and fill in the timing diagram for a falling-edge-triggered S-R flip-flop. **Description:** An S-R (Set-Reset) flip-flop is a basic type of flip-flop used in various electronic circuits. It has two inputs, labeled S (Set) and R (Reset), and one output, labeled Q. The state of the Q output depends on the inputs S and R as well as the clock signal. **Diagram Explanation:** The provided diagram is a timing diagram that illustrates the behavior of a falling-edge-triggered S-R flip-flop. The diagram includes four distinct waveforms: 1. **Clock Signal:** - This is the base signal that synchronizes changes in the flip-flop. In the diagram, it alternates between high and low states, with the transitions from high to low (falling edges) being critical for triggering. 2. **S (Set) Input Signal:** - This signal determines when the flip-flop should be set. It is shown as a rectangular waveform that transitions between high (logic 1) and low (logic 0) states. 3. **R (Reset) Input Signal:** - This signal determines when the flip-flop should be reset. Like the S signal, it is also shown as a rectangular waveform. 4. **Q (Output) Signal:** - The output of the flip-flop, which changes in response to the S and R inputs at the falling edge of the clock signal. **Key Points:** - **Falling Edge Trigger:** The flip-flop is sensitive to the falling edge of the clock signal, meaning it will evaluate the inputs and potentially change the output Q at the moment the clock transitions from high to low. - **Initial State Assumption:** Assume Q begins at 0. **Exercise:** Based on the S and R input signals shown in the timing diagram, fill in the Q (output) waveform. Remember, the flip-flop responds on the falling edge of the clock signal only. **Guide:** 1. Observe each falling edge of the clock on the diagram. 2. At each falling edge, note the states of the S and R inputs: - If S = 1 and R = 0, set Q to 1.
Transcribed Image Text:### Educational Website Content #### Timing Diagram for a Falling-Edge-Triggered S-R Flip-Flop **Objective:** Understand how to interpret and fill in the timing diagram for a falling-edge-triggered S-R flip-flop. **Description:** An S-R (Set-Reset) flip-flop is a basic type of flip-flop used in various electronic circuits. It has two inputs, labeled S (Set) and R (Reset), and one output, labeled Q. The state of the Q output depends on the inputs S and R as well as the clock signal. **Diagram Explanation:** The provided diagram is a timing diagram that illustrates the behavior of a falling-edge-triggered S-R flip-flop. The diagram includes four distinct waveforms: 1. **Clock Signal:** - This is the base signal that synchronizes changes in the flip-flop. In the diagram, it alternates between high and low states, with the transitions from high to low (falling edges) being critical for triggering. 2. **S (Set) Input Signal:** - This signal determines when the flip-flop should be set. It is shown as a rectangular waveform that transitions between high (logic 1) and low (logic 0) states. 3. **R (Reset) Input Signal:** - This signal determines when the flip-flop should be reset. Like the S signal, it is also shown as a rectangular waveform. 4. **Q (Output) Signal:** - The output of the flip-flop, which changes in response to the S and R inputs at the falling edge of the clock signal. **Key Points:** - **Falling Edge Trigger:** The flip-flop is sensitive to the falling edge of the clock signal, meaning it will evaluate the inputs and potentially change the output Q at the moment the clock transitions from high to low. - **Initial State Assumption:** Assume Q begins at 0. **Exercise:** Based on the S and R input signals shown in the timing diagram, fill in the Q (output) waveform. Remember, the flip-flop responds on the falling edge of the clock signal only. **Guide:** 1. Observe each falling edge of the clock on the diagram. 2. At each falling edge, note the states of the S and R inputs: - If S = 1 and R = 0, set Q to 1.
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