IMPORTANT QUESTIONS
· SHORT
QUESTIONS (02 marks)
1.
What is a Flip-flop?
2.
Implement Half adder using NAND gate?
3.
Simplify the
expression using K-map f(A,B,C)=.∑m(0,1,2,3,4,7)?
4.
Differentiate
between MUX and DEMUX?
5.
Convert Binary number (11011)2 to decimal.
6.
Convert Hexadecimal number (FCBA)16 to
binary.
7.
Convert decimal number (151)10 to binary.
8.
Convert Hexadecimal number (EBCA)16 to
Octal.
9.
Convert octal number (125)8 to hexadecimal.
10. Simplify
the expression AB+A(B+C)+B(B+C)
11. Simplify
the expression (A+B)(B+C)(A+C)
12. Simplify
the expression ABC+AB’C+ABC’
13. Simplify
the expression (A+B)(A+B’)
14. Simplify
the expression B(A+B’)(B+C)
15. What is de
Morgan’s Law.
16. Write Truth
table for AND gate & OR gate.
17. Differentiate
between EXOR gate and EXNOR gate.
18. Convert the
given expression to CSOP form F=A+AB+ABC.
19. Convert the
given expression to CSOP form F=AB+B’C’+A’C.
20. Simplify
the expression [(A+B’)(A’+B)]’
21. Draw the
symbol for NAND and NOR gate.
22. Define
propagation delay.
23. Define
FANOUT.
24. What are
Registers?
25. What do
mean by modulus of a counter.
26. Differentiate
between Synchronous and Asynchronous counter.
27. Find the
1’s complement of (10011)2 & (01100)2
28. Find the
2’s complement of (11101)2 & (011011)2
29. Perform the
subtraction using 1’s complement method
(i)7-3 (ii)8-5
30. Perform the
subtraction using 2’s complement method
(i)22-7
31. Perform the
subtraction using 2’s complement method
(i)22-13
32. What is a
Gray code?
33. Covert the
the binary number (110110)2 to Gray code.
34. State
applications of MUX.
· QUESTIONS (
5 marks/ 7 Marks )
1. State and
explain De morgan’s Law.
2. Explain Symbol,
function, expression, truth table of Basic Logic gates (NOT, OR, AND, NOR,
NAND, EX-OR & EX- NOR).
3. Implement
AND,OR,NOT gate using Universal Gates
4. Implement
EXOR gate using NAND and NOR gate.
5. State and
explain Half adder.
6. State and
explain Half sub-tractor.
7. State and
explain Full adder.
8. State and
explain Full sub-tractor
9. Implement
Full adder using NAND gate.
10. Implement
Full Sub-tractor using NAND gate.
11. Implement
Half adder using NAND and NOR gate.
12. Implement
Half Sub-tractor using NAND and NOR gate.
13. Explain the
principle of operation and its working of SR flip flop with truth table.
14. Explain the
principle of operation and its working of JK flip flop with truth table.
15. Explain the
principle of operation and its working of T-flip flop with truth table.
16. What is a
De-multiplexer? Explain 1:4 DEMUX?
17. What is a
Multiplexer? Explain 4:1MUX?
18. What is a
Decoder? Explain 2:4 Line Decoder?
19. Explain
Single Bit Magnitude Comparator?
20. Differentiate
between Combinational and Sequential logic circuit?
21. Explain the
working of 4 bit Ripple/Asynchronous counter with truth table.
22. Simplify the logic expression using K map
o f(A,B,C)=.∑m(0,1,2,3,4,6,7,8,9,12,13,14)
23. Simplify
the logic expression using K map
f(A,B,C,D)=∑m(0,4,6,7,8,12,13,14,15)
24. Simplify
the logic expression using K map F(A,B,C)=
25. Simplify
the logic expression using K map F(A,B,C.D)=
26. Simplify
the logic expression using K map F(A,B,C.D)=
27. Simplify
the logic expression using K map F(A,B,C.D)=
28. Simplify
the logic expression using K map F(A,B,C.D)=
29. Simplify
the logic expression using K map F(A,B,C.D)=∑m(0,2,3,5,8,10,11,13)
30. State and
Explain Synchronous Decade counter.
2018 question
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