Virtual Labs

Design of D-Flip-Flop using SPICE Code

What is the purpose of the 'inverter' subcircuit in the code?

a: To generate a clock signal Explanation

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b: To invert the clock signal Explanation

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c: To create a pass transistor Explanation

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d: To control the D-Latch Explanation

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What does the 'pass_transistor' subcircuit do?

a: Generates a clock signal Explanation

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b: Inverts the input signal Explanation

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c: Acts as a pass transistor controlled by a signal Explanation

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d: Creates a 2:1 MUX Explanation

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How is the D-Latch triggered in the 'd_latch' subcircuit?

a: By a clock signal Explanation

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b: By an inverted clock signal Explanation

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c: By the input signal 'in' Explanation

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d: By the output signal 'out' Explanation

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What is the function of the 'mux' subcircuit?

a: Inverts the input signal Explanation

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b: Generates a clock signal Explanation

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c: Acts as a 2:1 MUX Explanation

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d: Triggers the D-Latch Explanation

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What does the 'd_flipflop' subcircuit combine?

a: An inverter and a clock signal Explanation

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b: Two D-Latches Explanation

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c: A clock signal and a D-Latch Explanation

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d: Two pass transistors Explanation

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Which parameter sets the minimum width of the pass transistor in the code?

a: Wp Explanation

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b: Wmin Explanation

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c: Lmin Explanation

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d: supply Explanation

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What is the purpose of the 'V1' and 'V2' voltage sources in the code?

a: To supply power to the entire circuit Explanation

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b: To generate clock signals Explanation

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c: To provide input signals 'a' and 'clk' Explanation

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d: To control the pass transistors Explanation

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What type of waveform is applied to the 'a' input in the transient analysis?

a: Square wave Explanation

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b: Sine wave Explanation

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c: Pulse waveform Explanation

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d: Ramp waveform Explanation

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What does the '.tran' statement define in the code?

a: The width of the pass transistor Explanation

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b: The transient analysis parameters Explanation

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c: The clock signal frequency Explanation

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d: The length of the pulse waveform Explanation

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What is the purpose of the '.control' and '.endc' statements in the code?

a: To control the operation of the D-Flip-Flop Explanation

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b: To define subcircuits in the code Explanation

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c: To set parameters for pass transistors Explanation

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d: To control the transient analysis Explanation

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What does the 'plot v(a) v(clk)' statement in the '.control' block do?

a: Plots the input signals 'a' and 'clk' Explanation

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b: Plots the output signals of the D-Flip-Flop Explanation

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c: Sets the background color of the plot Explanation

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d: Defines the parameters for transient analysis Explanation

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