MCQs of DLD

MCQs of DLD

1. Which of the following gates give output 1, if and only if at least one input is 1?

A.OR
B.AND
C.NOR
D.NAND

Answer - Click Here:
A

 

2. For performing the function of two input OR gate, What is the minimum number of two-input NAND gates used?

A.2
B.3
C.4
D.5

Answer - Click Here:
B

 

3. In an application where input signals may ________________,Asynchronous circuits are useful.

A. never change
B. change at any time
C. both a and b
D. None

Answer - Click Here:
C

 

4. The time required by a gate or inverter to change their state is called _______________.

A.Rise time
B.Decay time
C.Charging time
D.Propagation time

Answer - Click Here:
D

 

5. The next state is determined in a sequential circuit is determined by ________ and _______

A. Current state and external input
B. Current state, flip-flop output
C. State variable, current state
D. Input and clock signal applied

Answer - Click Here:
A

 

6. SR latch contain ______________

A. 4 input
B. 3 inputs
C. 2 inputs
D. 1 inputs

Answer - Click Here:
C

 

7. If a pulse change from 10% to 90% of its maximum value, the time required is known as _____________.

A.Rise time
B.Operating speed
C.Propagation time
D.Decay time

Answer - Click Here:
A

 

8. By using two cascading counters _____________, ____________ the divide-by-60 counter in digital clock is implemented.

A. Mod-10, Mod-50.
B. Mod-50, Mod-10
C. Mod-6, Mod-10
D. Mod-50, Mod-6

Answer - Click Here:
C

 

9. Which table is not a part of asynchronous analysis procedure?

A. transition table
B. excitation table
C. flow table
D. state table

Answer - Click Here:
B

10. Digital data can be applied to gate by maximum frequency which is called _________________.

A. Charging time
B. Propagation speed
C. Binary level transaction period
D. Operating speed

Answer - Click Here:
D

 

11. Minimum time for which input signal maintained at the input of flip-flop is called _____________ of the flip-flop.

A. Set-up time
B. Hold time
C. Pulse Stability time (PST)
D. Pulse Interval time

Answer - Click Here:
B

 

12. For making a transition table we use _____________.

A. 3 steps
B. 5 steps
C. 6 steps
D. 8 steps

Answer - Click Here:
C