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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