Universal gates (NAND, NOR) Gat MCQs

By: Prof. Dr. Fazal Rehman | Last updated: June 20, 2025

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1. : What is the symbol for the NAND gate?





2. : What is the output of a NAND gate if both inputs are HIGH (1)?





3. : What is the symbol for the NOR gate?





4. : What is the output of a NOR gate if both inputs are LOW (0)?





5. : Which of the following gates is considered a universal gate?





6. : What is the output of a NAND gate if one input is LOW (0) and the other is HIGH (1)?





7. : What is the output of a NOR gate if one input is HIGH (1) and the other is LOW (0)?





8. : Which gate can be used to implement any logic function?





9. : Which gate is also known as a universal building block in digital circuits?





10. : What is the output of a NAND gate if both inputs are LOW (0)?





11. : What is the output of a NOR gate if one input is LOW (0) and the other is HIGH (1)?





12. : Which gate has the complement of its output equivalent to the AND gate?





13. : Which gate has the complement of its output equivalent to the OR gate?





14. : The output of a NAND gate is LOW (0) only when:





15. : The output of a NOR gate is HIGH (1) only when:





16. : Which gate is commonly used for simplifying logic expressions?





17. : Which gate is commonly used for implementing memory devices?





18. : What is the output of a NAND gate if one input is LOW (0) and the other is HIGH (1)?





19. : What is the output of a NOR gate if one input is HIGH (1) and the other is LOW (0)?





20. : Which gate can be used to implement any logic function, making it universal?





 

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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