MCA Entrance Previous Year Question Bank

Identify the logic function performed by the circuit:

The minimum number NAND gates required to realize $AB+A{B}^{\prime }C+A{B}^{\prime }{C}^{\prime }$ is

Which gate is equivalent to (NOR) OR (XOR)?

Consider the equation $(40)x=(132)y$ in some bases $x$ and $y$. Then a possible set of values of x and y are

If a signal passing through a gate is initiated by sending low into one of the inputs and the output is high, the gate is

Which of the following represents (𝐷4)16 ?

With 4-bit 2's complement arithmetic, which of the following addition will result in overflow?

If a signal passing through a gate is inhibited by sending a low into one of the inputs, and the output is high, the gate is a(n)

Let $\oplus$ and $\odot$ denote the Exclusive-OR and Exclusive-NOR operations respectively. Which one of the following is not correct?

A. $\bar{P}\oplus \bar{Q}=P\odot Q$

B. $\bar{P}\oplus Q=P\odot Q$

C. $\bar{P}\oplus Q=P\oplus Q$

D. $(P\oplus \bar{P})\oplus Q=(P\odot \bar{P})\odot \bar{Q}$

Consider the circuit shown below and find minimum number of NAND gates required to design it .