Digital Logic - Sequential Circuits

1:   When the maximum clock rate is quoted for a logic family, then it applies to a
A. shift register
B. flip-lop
C. counter
D. Multiplexer
 
 

Option: B

Explanation :

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2:  

The number of flip-flops required in a modulo N counter is

A.

log2 (N) + 1

B.

log2(N-1)

C.

log2 (N)

D.

N log2 (N)

 
 

Option: C

Explanation :

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3:  

Flip-flop outputs are always

A. Complimentary
B. The same
C. Independent of each other
D. same as previous input
 
 

Option: A

Explanation :

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4:   How many gates (minimum) are needed for a 3-bit up-counter using standard binary and using T lip-lops ? Assume unlimited fan-in.
A. 6
B. 3
C. 2
D. 1
 
 

Option: C

Explanation :

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5:   The clear data and present input of the JK lip-lop are known as
A. Synchronous inputs
B. Directed inputs
C. Either (a) or (b)
D. None of these
 
 

Option: C

Explanation :

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Syllabus covered in this section is-

  • Logic functions, Minimization,
  • Design and synthesis of combinational and sequential circuits
  • Number representation and computer arithmetic (fixed and floating point)
  • Propositional (Boolean) Logic
  • Satisfiability and Tautology
  • Logic Families: TTL, ECL and C-MOS gates.
  • Boolean algebra and Minimization of Boolean functions
  • Flip-flops-types, race condition and comparison.
  • Design of combinational and sequential Circuits
  • Representation of Integers: Octal, Hex. Decimal and Binary.
  •  2's complement and 1 's complement arithmetic
  • Floating point representation.

This Section covers Digital Logic Questions Answers .

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