Important Digital Logic and Design Short Questions
Chapter: 38
Question 1:
What differentiates a Moore Machine from a Mealy Machine?
Answer:
A Moore Machine's output depends only on the current state, not on external inputs.
Chapter: 38
Question 2:
What are the transition equations for D flip-flops in a state machine?
Answer:
Q0(t+1) = Q0EN + Q0EN and Q1(t+1) = Q1EN + Q0Q1EN + Q0Q1EN.
Chapter: 38
Question 3:
How many states can a state machine with two D flip-flops have?
Answer:
It can have a maximum of four states.
Chapter: 38
Question 4:
What is the purpose of the transition table in state machine analysis?
Answer:
It helps in determining the next states based on the current state and inputs.
Chapter: 38
Question 5:
How does a J-K flip-flop function differently from a D flip-flop?
Answer:
A J-K flip-flop's next state is determined by the J and K inputs along with the current state, while a D flip-flop's next state is directly assigned from the input D.
Chapter: 38
Question 6:
What does the output equation Z = XQ0Q1 + YQ0Q1 describe in a state machine?
Answer:
It represents the output Z of a state machine based on the current states Q0, Q1 and inputs X, Y.
Chapter: 39
Question 7:
What is the smallest unit of binary data in memory?
Answer:
The smallest unit of binary data is a bit.
Chapter: 39
Question 8:
What does a memory cell in a sequential circuit store?
Answer:
A memory cell in a sequential circuit stores a binary 0 or 1.
Chapter: 39
Question 9:
What is a byte composed of?
Answer:
A byte is composed of two 4-bit units called Nibbles.
Chapter: 39
Question 10:
How is data stored in an 8 x 8 memory array organized?
Answer:
In an 8 x 8 memory array, data is stored as 8 bytes, with each location storing one byte.