Important Digital Logic and Design Short Questions
Chapter: 38
Question 1:
What triggers the Timer reset in the Traffic Light Controller?
Answer:
The Timer resets when the state is NSY2 or EWY2.
Chapter: 38
Question 2:
How is the Green cycle time controlled in the Traffic Light Controller?
Answer:
It is controlled by the Timer signals LTIME and STIME for day and night cycles, respectively.
Chapter: 38
Question 3:
What does the MANUAL input do in the Traffic Light Controller?
Answer:
Activates Manual Mode where Yellow signals flash, with flash rate determined by FLASHCLK.
Chapter: 38
Question 4:
What does the NSGRN output represent?
Answer:
It turns on the North-South Green signal when the TRSTATE is NSG.
Chapter: 38
Question 5:
How does the Traffic Light Controller handle the Yellow signals?
Answer:
The Yellow signals are controlled based on the TRSTATE values and can also be activated by MANUAL and FLASHCLK inputs.
Chapter: 38
Question 6:
What is the purpose of the characteristic equation for flip-flops?
Answer:
It describes the functional response of a flip-flop based on its current state and inputs.
Chapter: 38
Question 7:
How is the output of a S-R latch determined?
Answer:
The output Qt+1 of an S-R latch is given by the equation Qt+1 = S + RQt.
Chapter: 38
Question 8:
What is the characteristic equation for a D latch?
Answer:
The characteristic equation for a D latch is Qt+1 = D.
Chapter: 38
Question 9:
How is the next state of a D flip-flop calculated?
Answer:
For a D flip-flop, the next state Qt+1 is directly assigned from the input D.
Chapter: 38
Question 10:
What defines a Mealy Machine?
Answer:
A Mealy Machine's output depends on the current state and the external input.