List of top Nanoelectronics Questions on Digital Electronics and Logic Gates

Which type of counter requires 5 flip-flops to implement a MOD-31 operation?
The number of flip-flops required to implement a MOD-31 counter are:
The product of maxterms for the given boolean function is: \[ Y = ab + a'c \] Choose the correct answer from the options given below:
Characteristic equation (\( Q_{next} \)) is provided for the different flip-flops:
(A) \( Q_{next} = S Q + R Q' \)
(B) \( Q_{next} = S Q' + R Q \)
(C) \( Q_{next} = T Q' + T' Q \)
Choose the correct answer from the options given below:
The output frequency for an 8-bit Johnson counter is ......... if the applied input frequency is 256 GHz.

Match List-I with List-II:

List-I (Counters) List-II (Delay/Number of States)
(A) n-bit ring counter(I) Number of states is \( 2^n \)
(B) MOD-\(2^n\) asynchronous counter(II) Fastest counter
(C) n-bit Johnson counter(III) Number of used states is \( n \)
(D) Synchronous counter(IV) Number of used states is \( 2n \)

Choose the correct answer from the options given below: