Logic Gates

It is representing:

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.

Write down the output at $\mathrm{X}$ for the inputs $A\mathit{=}0,B\mathit{=}0$ and $A=1, B=1$

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

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

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

The inputs A and B are inverted by using two NOT gates and their outputs are fed to the NOR gate as shown below.


Analyse the action of the gates (1) and (2) and identify the logic gate of the complete circuit so obtained.

Output of following logic circuit is

Where is NOR gate used?

What is the expression of XNOR gate?

How do you write a NOR gate?

Is NOR the same as and?

Is NOR gate and XOR gate same?

Differentiate between analog signals and digital signals

Write the advantages of using digital signals over analogue signals.

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

The signals in which we use only two levels of voltage (represented by $0$ or $1$) are digital signals.

The following figure shows a logic gate circuit with inputs $\text{'}A\text{'}$ and $\text{'}B\text{'}$ and output $\text{'}Y\text{'}.$ If the voltage wave forms of $A, B$ and $Y$ are as given, then the logic gate is

The quantities whose values vary in non-continuous manner are

Distinguish between Analog and Digital signals.