Digital Logic - Online Test
Q1. Consider the Boolean operator # with the following properties:
Then x # y is equivalent to
Then x # y is equivalent to
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. Consider the two cascaded 2-to-1 multiplexers as shown in the figure.
The minimal sum of products form of the output X is
Answer : Option D
Explaination / Solution:
Q3. Consider a combination of T and D flip-flops connected as shown below. The output of the D flip-flops is connected to the input of the T flip-flop and the output of the T Flip-flop connected to the input of the D Flip-flop. 
Initially, both Q0 and Q1 are set to 1 ( before the 1st clock cycle). The outputs
Answer : Option B
Explaination / Solution:
Q4. What is the Boolean expression for the output f of the combinational logic circuit
of NOR gates given below?
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. In the sequential circuit shown below, if the initial value of the output Q1Q0 is 00,
what are the next four values of Q1Q0?
Answer : Option D
Explaination / Solution:
No Explaination.
