Multiple choice Questions Digital Logic Design

By: Prof. Dr. Fazal Rehman | Last updated: May 5, 2025

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1. : Boolean algebra is also called



 

2. : Boolean function must be brought into ________ to perform product of max terms



 

3. : The binary number 10101 is equivalent to the decimal number



 

4. : The universal gate is



 

5. : According to Boolean algebra absorption law, which of the following is correct?



 

6. : A Boolean function may be transformed into



 

7. : The inverter is



 

8. : The resulting circuit of NAND gates connected together is



 

9. : xy = yx is the



 

10. : Minterms are also called



 

11. : OR gate and __________ will form the NOR gate?



 

12. : The NAND gate is an AND gate followed by



 

13. : Max terms are also called



 

14. : In Boolean algebra, multiplicative inverse is



 

15. : By the repeated use of __________ digital circuits can be made



 

16. : The only function of NOT gate is



 

17. : Boolean algebra is defined as a set of



 

18. : First operator precedence for evaluating Boolean expressions is



 

19. : The output is __________ when an input signal 1 is applied to a NOT gate



 

20. : The bar sign (–) indicates __________ in Boolean algebra



 

21. : The value of n is ______ when the resolution of an n-bit DAC with a maximum input of 5 V is 5 mV



 

22. : 2’s complement of binary number 0101 is



 

23. : An OR gate has 4 inputs. The output is ______ when one input is high and the other three are low



 

24. : To convert BCD to seven segments __________ device is used



 

25. : Decimal number 10 is equal to binary number



 

26. : In 2’s complement representation, the number 11100101 represents the decimal number



 

27. : A decade counter skips



 

28. : Number of states a ring counter with 5 flip-flops will have?



 

 

MCQs of Digital Logic Design (DLD)

Introduction to Digital Systems

  1. Analog vs. Digital signals MCQs
  2. Binary numbers and arithmetic MCQs
  3. Logic levels and noise margins MCQs

Boolean Algebra

  1. Basic logic operations (AND, OR, NOT) MCQ
  2. Laws and theorems of Boolean algebra MCQ
  3. De Morgan’s Theorems MCQ
  4. Canonical forms (Sum of Products, Product of Sums) MCQ
  5. Simplification techniques (Karnaugh Maps, Quine-McCluskey method) MCQs

Combinational Logic

Logic Gates

  1. Basic gates (AND, OR, NOT) Gat MCQ
  2. Universal gates (NAND, NOR) Gat MCQs
  3. XOR and XNOR gates MCQ

Combinational Circuits

  1. Design and analysis of combinational circuits MCQ
  2. Multiplexers and Demultiplexers MCQ
  3. Encoders and Decoders MCQ
  4. Binary Adders (Half adder, Full adder) MCQ
  5. Subtractors and Arithmetic Logic Units (ALU) MCQ
  6. Comparators MCQ in DLD

Sequential Logic

Flip-Flops and Latches

  1. SR Latch, D Latch MCQ
  2. Flip-Flops (SR, D, JK, T) MCQ
  3. Characteristic equations and excitation tables MCQ
  4. Edge-triggered vs. level-triggered devices MCQ

Counters and Registers

  1. Synchronous, Asynchronous (ripple), Up/Down counters MCQs
  2. Shift registers (SIPO, PISO, SISO, PIPO) MCQs

State Machines

Finite State Machines (FSMs)

  1. Moore and Mealy machines MCQs

Memory and Programmable Logic MCQs

Memory Devices

  1. Read-Only Memory (ROM)
  2. Random Access Memory (RAM)
  3. Programmable Logic Devices (PLDs) MCQs
  4. Field Programmable Gate Arrays (FPGAs) MCQs

 

MCQs of Digital Logic Design (DLD)

Introduction to Digital Systems

  1. Analog vs. Digital signals MCQs
  2. Binary numbers and arithmetic MCQs
  3. Logic levels and noise margins MCQs

Boolean Algebra

  1. Basic logic operations (AND, OR, NOT) MCQ
  2. Laws and theorems of Boolean algebra MCQ
  3. De Morgan’s Theorems MCQ
  4. Canonical forms (Sum of Products, Product of Sums) MCQ
  5. Simplification techniques (Karnaugh Maps, Quine-McCluskey method) MCQ

Combinational Logic

Logic Gates

  1. Basic gates (AND, OR, NOT) Gat MCQ
  2. Universal gates (NAND, NOR) Gat MCQs
  3. XOR and XNOR gates MCQ

Combinational Circuits

  1. Design and analysis of combinational circuits MCQ
  2. Multiplexers and Demultiplexers MCQ
  3. Encoders and Decoders MCQ
  4. Binary Adders (Half adder, Full adder) MCQ
  5. Subtractors and Arithmetic Logic Units (ALU) MCQ
  6. Comparators MCQ in DLD

Sequential Logic

Flip-Flops and Latches

  1. SR Latch, D Latch MCQ
  2. Flip-Flops (SR, D, JK, T) MCQ
  3. Characteristic equations and excitation tables MCQ
  4. Edge-triggered vs. level-triggered devices MCQ

Counters and Registers

  1. Synchronous, Asynchronous (ripple), Up/Down counters MCQs
  2. Shift registers (SIPO, PISO, SISO, PIPO) MCQs

State Machines

Finite State Machines (FSMs)

  1. Moore and Mealy machines MCQs

Memory and Programmable Logic MCQs

Memory Devices

  1. Read-Only Memory (ROM)
  2. Random Access Memory (RAM)
  3. Programmable Logic Devices (PLDs) MCQs
  4. Field Programmable Gate Arrays (FPGAs) MCQs

More MCQs of Digital Logic Design (DLD)

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