Logic Gates

IMPORTANT

Logic Gates: Overview

This topic covers concepts, such as, Types of Signals, Analogue Signals, Circuits with Logic Gates & Integrated Circuits etc.

Important Questions on Logic Gates

EASY
IMPORTANT

The logic gate given below represents a
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EASY
IMPORTANT

The same input signal is applied to both the (input) terminals of a given logic gate.

If the output is the(i) same as the (common) input signal

(ii) inverted with respect to the (common) input signal,

Identify the logic gate/s involved in each case.
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HARD
IMPORTANT

Write down the output at X for the inputs A=0,B=0 and A=1, B=1
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EASY
IMPORTANT

Identify the logic gates marked P and Q in the given logic circuit.

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EASY
IMPORTANT

Identify the logic gates marked P and Q in the given logic circuit.
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EASY
IMPORTANT

(i) Identify the logic gates marked P and Q in the given logic circuit.

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EASY
IMPORTANT

The inputs A and B are inverted by using two NOT gates and their outputs are fed to the NOR gate as shown below.
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Analyse the action of the gates (1) and (2) and identify the logic gate of the complete circuit so obtained.

EASY
IMPORTANT

In a NAND Gate, A and B are inputs and Y is the output, then the correct option is

EASY
IMPORTANT

The behaviour of the circuit is like gate

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MEDIUM
IMPORTANT

In the following logic circuit, C=D=E=0; for what values of A and B the output Y=1

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EASY
IMPORTANT

Where is NOR gate used?

EASY
IMPORTANT

What is the expression of XNOR gate?

EASY
IMPORTANT

How do you write a NOR gate?

EASY
IMPORTANT

Is NOR the same as and?

EASY
IMPORTANT

Is NOR gate and XOR gate same?

EASY
IMPORTANT

Digital signals have ________ noise immunity compared to the analog signals.

EASY
IMPORTANT

Sine wave is a fundamental 

HARD
IMPORTANT

In the given circuit, the input voltages at P and Q could be either 0 V or 10 V. Use the fact that a diode under forward bias is a short circuit, and under reverse bias is an open circuit. The truth table of the circuit will be that of

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EASY
IMPORTANT

The quantities whose values vary in non-continuous manner are