Wednesday, October 24, 2018

DLD Question bank Uint-4


1.a) What is a flip-flop? What are its function?
  b) Compare combinational circuits and sequential circuits
  c) Define the working principle SR flip flop with truth table
  d) Convert the JK flip flop to T flip flop.                [2+3+5+5]

 2. a) What is Synchronous and asynchronous sequential circuits
     b) What is race around condition? How it is eliminated?
     c) Explain about a NOR Latch in detail with a neat diagram. 
     d) Define the working principle JK flip flop with truth table
                                                                                      [2+3+5+5]
      
 3.a) Explain clear and preset inputs
    b) Draw the logic diagram for S-R latch using two NAND gates
    c) Define the working principle T flip flop with truth table
    d) Convert the T flip flop to D      
                                                                                     [2+3+5+5]

4.a) Construct Master-Slave J-K Flip-Flop
   b) Define the Boolean expression for SR flip flop and D flip flop.
   c) Realize D-FF and T-FF using JK-FF. Draw the logic diagrams with their truth tables.                                                                                                       
                                                                                         [2+3+10]

5 a) Show the excitation table and truth table of JK flip flop.
   b) Draw the logic diagram for S-R latch using two NOR gates
   c) Explain the working of synchronous sequential circuits and asynchronous sequential circuits with examples and mention their applications.
  d) With the help of a neat block diagram explain the working of J-K Master-Slave flip-flop.                                                                                                   
                                                                                               [2+3+5+5]
                    
6 .a) Explain about Ripple counter.
    b) Show the excitation table and truth table of SR flip flop 
    c) Draw the circuit diagram of a 4 bit UP/DOWN binary counter and explain its working with the help of its state diagram and truth table.                                                   
                                                                                               [2+3+10]

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