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Questions and Answers
What is one primary function of a D flip flop?
What is one primary function of a D flip flop?
- To divide frequency
- To perform arithmetic operations
- To store single bit of data (correct)
- To generate clock pulses
What happens to the output of a T flip flop when T = 0?
What happens to the output of a T flip flop when T = 0?
- It toggles to 1
- It resets to 0
- It activates the clock pulse
- It remains unchanged (correct)
In which application is a T flip flop particularly beneficial?
In which application is a T flip flop particularly beneficial?
- Signal amplification
- Data synchronization
- Data storage
- Toggling circuits (correct)
Which state does a D flip flop output when the input D is set to 1?
Which state does a D flip flop output when the input D is set to 1?
What does a T flip flop do on each clock pulse when T = 1?
What does a T flip flop do on each clock pulse when T = 1?
Flashcards
D Flip-Flop
D Flip-Flop
A type of flip-flop that stores a single bit of data and changes its output state based on the value of its 'D' input. It's like a temporary memory cell that holds a 1 or a 0.
Flip-Flop
Flip-Flop
A digital circuit that holds a value (1 or 0) and can be set or reset. It's like a switch that can be flipped on or off.
Truth Table (for Flip-Flops)
Truth Table (for Flip-Flops)
A table that shows all possible combinations of inputs and their corresponding outputs for a flip-flop. It helps to understand the logic of the circuit.
T Flip-Flop
T Flip-Flop
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Excitation Table
Excitation Table
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Study Notes
Digital Logic Design: D and T Flip Flops
- A D flip-flop is an electronic device, also known as a "delay flip-flop" or "data flip-flop," used to store a single bit of data.
- D flip-flops are used in data storage, registers, shift registers, frequency division, and latch circuits.
- The D flip-flop's block diagram shows input D, clock (Clk), output Q, and the flip-flop itself.
D Flip-Flop Truth Table
- A truth table shows the relationship between the input (D) and output (Q) of the D flip-flop.
- The truth table for a D flip-flop shows that when the input is 0, the output will be 0. When the input is 1, the output will be 1.
D Flip-Flop Characteristic Table
- The characteristic table shows the next state (Qn+1) of the flip-flop for various present states (Qn) and input (D) values.
- For example, if the present state is 0 and the input is 0, the next state will be 0. If the present state is 1 and the input is 1, the next state will be 1.
D Flip-Flop Excitation Table
- The excitation table shows the input (D) required to get a desired next state (Qn+1) from a given present state (Qn).
D Flip-Flop Characteristic Equation
- The characteristic equation defines the output (Qn+1) as a function of the input (D) and the current state (Qn). The equation is Q(n+1) = D.
D Flip-Flop Circuit Diagram
- A circuit diagram shows the physical implementation of the D flip-flop using logic gates.
T Flip-Flop
- A T flip-flop, also known as a Toggle flip-flop, toggles the output state on every clock pulse when the input T is 1.Â
- If T = 0, the output remains unchanged.
- T flip-flops have a single input (T).
- T flip-flops are useful in counters and toggling circuits.
- A truth table shows the relationship between input T and output Q(n+1) of a T flip-flop.
T Flip-Flop Characteristic Table
- A characteristic table shows the output of next state (Q(n+1)) for various present state (Q(n)) and input (T) combinations.
T Flip-Flop Characteristic Equation
- The characteristic equation defines the output (Qn+1) as a function of the input (T) and the current state (Qn). The equation is Q(n+1) = T⊕ Qn (T XOR Qn)
T Flip-Flop Circuit Diagram
- A circuit diagram shows the T flip-flop's internal structure implemented with logic gates.
Additional Information
- An excitation table maps present states (Qn) and next states (Qn+1) to the input T values required to achieve the transition.
- Basic SR latch circuits are used in creating more complex flip-flop structures.
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