Virtual Labs

Design of NAND, NOR Gates using SPICE Code

What is the basic purpose of a NAND gate?

a: Performs addition Explanation

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b: Performs multiplication Explanation

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c: Performs logical NAND operation Explanation

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d: Performs logical OR operation Explanation

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What is the Boolean expression for a NOR gate?

a: A + B Explanation

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b: A * B Explanation

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c: A AND B Explanation

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d: NEG (A OR B) Explanation

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In SPICE code, what is the purpose of the '.OPTIONS' statement?

a: Define circuit elements Explanation

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b: Set simulation options Explanation

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c: Create subcircuits Explanation

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d: Specify component values Explanation

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Which SPICE directive is used to specify the DC operating point in a simulation?

a: .TRAN Explanation

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b: .DC Explanation

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c: .OP Explanation

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d: .AC Explanation

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What is the purpose of a pull-up resistor in a NAND gate circuit?

a: To increase speed Explanation

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b: To provide logic inversion Explanation

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c: To prevent floating inputs Explanation

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d: To reduce power consumption Explanation

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What is the function of the '.IC' statement in SPICE code?

a: Define initial conditions Explanation

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b: Specify component values Explanation

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c: Create subcircuits Explanation

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d: Set simulation options Explanation

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In a NAND gate circuit, what is the purpose of a parallel resistor connected to the output?

a: To increase speed Explanation

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b: To provide logic inversion Explanation

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c: To prevent floating inputs Explanation

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d: To reduce power consumption Explanation

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Which SPICE directive is used for transient analysis of a circuit?

a: .TRAN Explanation

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b: .DC Explanation

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c: .OP Explanation

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d: .AC Explanation

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What is the purpose of a feedback loop in the design of a NOR gate circuit?

a: To increase speed Explanation

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b: To provide logic inversion Explanation

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c: To introduce hysteresis Explanation

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d: To amplify the output Explanation

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