Virtual Labs

Consider the digital car- door- lock alarm system which sounds an alarm when receives a logic 1. The alarm will sound under what condition?{Assume: Door open = Logic 0}.

a: Front Right Door is open Explanation

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b: Front Left Door is open Explanation

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c: All four doors are open. Explanation

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d: All the above Explanation

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Refer the application shown below and solve the following questions. [Alarm sounds on receiving a logic HIGH.]

a: Alarm sounds when X = 1. Explanation

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b: Alarm sounds when X = 0 and A=B=C=D=0. Explanation

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c: Alarm sounds when X = 1 and A=B=0, C=D=1. Explanation

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d: All of the above conditions. Explanation

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Consider the circuit given below. Analyze the circuit and state the condition for which the output Y = 0.

a: A=B=1, C = 1 Explanation

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b: A=B=1, C = 0 Explanation

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c: A= B = 0, C = 1 Explanation

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d: A=B= X, C= 1 Explanation

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Simplify the following expression using DeMorgan's theorems: Y = [A(B+C')'D]'

a: Y = A' + B + C' +D Explanation

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b: Y = A' + B' + C' +D' Explanation

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c: Y = A' + B + C' +D' Explanation

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d: Y = A + B + C +D Explanation

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NOR gate is referred to as Universal gate because

a: NOT gate can be implemented using NOR gate. Explanation

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b: AND gate can be implemented using ONLY NOR gates. Explanation

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c: Any logic combinational circuit can be implemented using ONLY NOR gates. Explanation

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d: All of these. Explanation

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