Podcast
Questions and Answers
What distinguishes a negative-edge-triggered D flip-flop from a positive-edge-triggered D flip-flop?
What distinguishes a negative-edge-triggered D flip-flop from a positive-edge-triggered D flip-flop?
In the timing diagram of a master-slave D flip-flop, what relationship exists between Qm and Qs?
In the timing diagram of a master-slave D flip-flop, what relationship exists between Qm and Qs?
What is the primary function of a D flip-flop?
What is the primary function of a D flip-flop?
What does the symbol '>' in the graphical representation of a D flip-flop indicate?
What does the symbol '>' in the graphical representation of a D flip-flop indicate?
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Which statement accurately describes the operation of a master-slave D flip-flop?
Which statement accurately describes the operation of a master-slave D flip-flop?
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For edge-triggered D flip-flops, what happens when the clock signal is held at a high level?
For edge-triggered D flip-flops, what happens when the clock signal is held at a high level?
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In a positive-edge-triggered D flip-flop, what is the condition for output Q to change?
In a positive-edge-triggered D flip-flop, what is the condition for output Q to change?
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What role does the master play in the master-slave D flip-flop configuration?
What role does the master play in the master-slave D flip-flop configuration?
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How do level-sensitive D storage elements differ from edge-triggered D flip-flops?
How do level-sensitive D storage elements differ from edge-triggered D flip-flops?
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What is indicated by the small circle in the graphical symbol of a flip-flop?
What is indicated by the small circle in the graphical symbol of a flip-flop?
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What can be said about the output Q of a D flip-flop if the D input is high and remains stable during a rising clock edge?
What can be said about the output Q of a D flip-flop if the D input is high and remains stable during a rising clock edge?
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What happens in a D flip-flop when the D input transitions from low to high just before a negative clock edge?
What happens in a D flip-flop when the D input transitions from low to high just before a negative clock edge?
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What defines the storage capability of a D flip-flop?
What defines the storage capability of a D flip-flop?
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Study Notes
Course Information
- Course Title: CprE 281: Digital Logic
- Instructor: Mohamed Selim
- Institution: Iowa State University, Ames, IA
- Copyright: © Alexander Stoytchev
Homework
- Homework 07 due March 19th at 11:59 PM
Schedule
- Friday after Spring Break (3/22): Quiz 03
- Friday after (3/29): Midterm Exam 2
- Exam location: In-class
- Exam topics: Chapters 1, 2, 3, 4, and 5.1-5.8
Topics Discussed
- Binary Numbers and Hexadecimal Numbers
- 1's complement and 2's complement representation
- Addition and subtraction of binary numbers
- Circuits for adders and fast adders
- Single and Double precision IEEE floating point formats
- Converting a real number to the IEEE format
- Converting a floating point number to decimal
- Multiplexers (circuits and function)
- Synthesis of logic functions using multiplexers
- Shannon's Expansion Theorem
- Decoders (circuits and function)
- Demultiplexers
- Encoders (binary and priority)
- Code Converters
- Synthesis of logic circuits using adders, multiplexers, encoders, decoders, and basic logic gates with given constraints on the available building blocks that you can use
- Latches (circuits, behavior, timing diagrams)
- Flip-Flops (circuits, behavior, timing diagrams)
- Registers and Register Files
- Simple memory elements with NOT gates
- Simple memory elements with NOR gates
- Basic Latch (with NOR Gates)
- Basic Latch (with NAND Gates)
- Gated SR Latch
- Gated SR Latch with NAND gates
- Gated SR Latch with NOR gates
- Gated D Latch
- Master-Slave D Flip-Flop
- Edge-Triggered D Flip-Flops
Other Notes
- Various circuit diagrams and timing diagrams related to latches, flip-flops, and other digital logic elements are included in the presentation materials.
- Specific topics like setup time (tsu) and hold time (th) relating to timing diagrams were presented.
- Other types of edge-triggered D Flip-Flops including positive and negative edge-triggered master-slave D flip-flops are covered.
- A double-door analogy for D flip-flops is given.
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