Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 102

104. The following figure shows a logic gate circuit with two inputs $A$ and $B$ and the output $C$. The voltage waveforms of $A, B$ and $C$ are as shown below

The logic circuit gate is

(a) NAND gate

(b) NOR gate

(c) OR gate

(d) AND gate

[2006]

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Answer:

Correct Answer: 104. (d)

Solution:

  1. (d) On the basis of given graph, following table is possible.

$ \begin{matrix} \text{ A } & \text{ B } & \text{ C } \\ 0 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \end{matrix} $

It is the truth table of AND gate.