Digital logic design can be a challenging subject, but with a little practice and understanding, it can be easy to get a handle on the concepts. This article provides multiple choice questions with answers to help you learn more about digital logic design.
Digital Logic Design Multiple Choice Questions with Answers pdf are useful for the students of IT preparing for competitive & academic exams.
Brief Introduction to Digital logic design
Digital logic design is a process that helps engineers create digital circuits. The process begins by designing the circuit’s input and output signals, as well as its controlling signals. Next, the engineer designs the circuit’s gates and flip-flops. Finally, they must design the circuit’s feedback and clock signals.
Digital Logic Design Multiple Choice Questions with Answers
1. Decimal means base ___.
Answer: 10
2. The value of the bit pattern 11111111 is ___.
Answer: 255
3. The range of values represented by an 8-bit binary number is ___.
Answer: 0 to 255
4. The binary equivalent of 228 is ___.
Answer: 228
5. The octal equivalent of (100)10 is ___.
Answer: (144)8
6. The decimal equivalent of (0.265)10 is ___.
Answer: (0.0100)2
7. The hexadecimal equivalent of (1011 1010 0011 .0010)2 is ___.
Answer: (B A 3 .2)16
8. The result of 7-2 using 1’s complement notation is ___.
Answer: 0100
9. The bit pattern 1011 in 1’s complement notation is ___.
Answer: – 4
10. The result of 7-2 using 2’s complement notation is ___.
Answer: 0101
11. The bit pattern 1110 in 2’s complement notation is ___.
Answer: –2
12. The range of numbers that can be represented using the Excess-2N-1 notation is ___
Answer: 2N–1 – 1 to – 2N – 1
13. The significant digits of 0012340 is ___.
Answer: 0012340
14. The bit pattern 1101 Excess Number converted value is ___.
Answer: 13
15. If x,y,z contains values 0,1,1 then (x+z)y is ___.
Answer: 1
16. x+y.0 is ___ Law.
Answer: Commutative
17. x+1 =1 is ___ Law.
Answer: Dominance
18. Boolean product for 1 and 0 in AND has ___ value.
Answer: 0
19. Boolean product for 1 and 0 in OR has ___ value.
Answer: 1
20. Postulate P3 indicates ___.
Answer: The • and + operators are commutative
21. The NAND Gate output for input values 0 and 1 are ___.
Answer: 1
22. The NOR Gate output for input values 1 and 0 is ___.
Answer: 0
23. NOR is a ___ complete operation.
Answer: Functionally
24. A system which is having 10 symbols from 0 to 9 is called
a. Binary System
b. Decimal system
c. Octal System
d. Both a and b
Answer: b. Decimal system
25. Write the Binary equivalent of 29 in decimal
a. llll0(2)
b.ll0l0l(2)
c.ll0l(2)
d. 11101(2)
Answer: d. 11101(2)
26. convert the 101.11(2) to decimal
a. 5.75
b. 5.65
c.,5.55
d. None
Answer: a. 5.75
27. Exclusive NOR is defined as ___.
Answer: NOT of (A XOR B)
28. If x and y are 0 and 1, the Boolean function xy+xy’ result is ___.
Answer: 0
29. A minterm has a value ___ if and only if all the values of its variables are 1.
Answer: 1
30. If x,y,z are 0,0,1 the minterm is ___ and maxterm is ___.
Answer: Minterm ◊x’y’z Maxterm◊x+y+z’
31. Implicants that cover as many cells of the map as possible are called ___.
Answer: Prime implicants
32. Simple functions are called ___.
Answer: Product functions
33. A Karnaugh map is a ___ representation of the truth table for a Boolean Function.
Answer: 2-dimensional
34. Step 2 is ___.
Answer: Translate to minterms in binary notation if not given in binary minterm form.
35. Step D in doesn’t care ___.
Answer: Select the column in which a specific minterm is only covered by one prime implicant. The minterm 0011 is an example. Mark 0-1- prime implicant row and all are intersecting columns.
36. The decimal equivalent of an octal number 234.32 is
a. 156.15625
d. 156.15265
c. 156.2562
d. 156.1554
Answer: a. 156.15625
37. Represent the 1011001.1011(2) to octal
a. 132.54
b. 132.55
c. 131.54
d. 132.45
Answer: c. 131.54
38. The l’s complement of 111010 is
a.000l00
b.000l0l
c. 000011
d. None
Answer: b.000l0l
39. Asynchronous counters are also called?
a. Decade Counters
b. Ripple counters
c. 4-bit binary counters
d. Both band c
Answer: b. Ripple counters
40. The basic gates are
a. AND, OR, NAND
b. NAND, NOR
c. AND, OR, NOT
d. AND, NOR, NAND
Answer: c. AND, OR, NOT
41. Demorgan’s first Theorem says that
a. The complement of a product form of an expression is equal to the sum of the complements.
b. The complement of a sum form of an expression to the product of the complements
c. Both a and b
d. None
Answer: c. Both a and b
42. Simplify (a+b)+c by using Demorgan’s Theorem.
a. (a+b)c
b. (a+b)+c
c. (a+b+c)
d. None
Answer: a. (a+b)c
43. The terms involved in the SOP form are called?
a. Maxterms
b. Minterms
c. Both a and b
d. None
Answer: b. Minterms
44. The method used to simplify the Boolean expression is
a. k-map
b. Quine Mcclusky
c. Both a and b
d. None
Answer: c. Both a and b
45. The difference between a half-adder and a full-adder is
a. The half adder is having a carry input
b. The full adder is not having a carry input
c. The half added does not have a carry input
d. None
Answer: c. The half added does not have a carry input
46. Multiplexers are known as
a. Data Selectors
b. Data Deselectors
c. converters
d. Both a and ‘b
Answer: a. Data Selectors
47. The Demultiplexers are
a. One input line and many output lines
b. Many input lines and one output line
c. Both a and b
d. None
Answer: a. One input line and many output lines
48. Even parity means
a. There is even a number of l’s in a code
b. There is the odd number of l’s in a code
c. There is an unequal number of l’s in a code
d. Both a and b
Answer: a. There is an even number of l’s in a code
49. A simple memory unit is known as-
a. Flip-Flops
b. Latch
c. Registers
d. None
Answer: a. Flip-Flops
50. Edge triggered flip-flops are
a. Synchronous inputs
b. Bistable with synchronous inputs
c. Bistable with asynchronous inputs
d. None
Answer: b. Bistable with synchronous inputs
You may read Logic Design MCQs from here
Conclusion:
Digital logic design is an important part of computer engineering. The questions in this quiz should help you to better understand the concepts involved in digital logic design. Good luck!
Thanks for visiting our blog, if you like these MCQs on Digilat Logic Design please share them on social media.
Read More MCQs:
- Digital-Logic-Design MCQs
- Database Management System MCQs
- Digital Electronics MCQ with answers: Set-1
- Download pdf of Digital Electronics MCQs
Watch YouTube Video of Digital Logic Design 50 MCQs with Answers
Thankfulness to my father who informed me
about this blog, this weblog is actually amazing.
Thanks for sharing this post its really helpful for me me also preparing Digital Logic Design MCQs
it is very nice.