Basic gates (AND, OR, NOT) Gat MCQ

By: Prof. Dr. Fazal Rehman | Last updated: June 8, 2024

Which of the following is the symbol for the NOT gate?

A) ∧
B) ∨
C) ⊕
D) ¬
Answer: D
What is the output of an AND gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the output of an OR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
The truth table for an AND gate has how many rows?

A) 1
B) 2
C) 3
D) 4
Answer: D
Which logic gate has an output that is the inverse of the input?

A) AND gate
B) OR gate
C) NOT gate
D) XOR gate
Answer: C
What is the output of a NOT gate if the input is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the symbol for the OR gate?

A) ∧
B) ∨
C) ⊕
D) ¬
Answer: B
The truth table for a NOT gate has how many rows?

A) 1
B) 2
C) 3
D) 4
Answer: B
What is the output of an OR gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the symbol for the AND gate?

A) ∧
B) ∨
C) ⊕
D) ¬
Answer: A
The truth table for an OR gate has how many rows?

A) 1
B) 2
C) 3
D) 4
Answer: D
What is the output of an AND gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which logic gate has an output of HIGH (1) only when both inputs are HIGH (1)?

A) AND gate
B) OR gate
C) NOT gate
D) XOR gate
Answer: A
What is the output of an XOR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the symbol for the XOR gate?

A) ∧
B) ∨
C) ⊕
D) ¬
Answer: C
Which logic gate has an output of HIGH (1) when inputs are different?

A) AND gate
B) OR gate
C) NOT gate
D) XOR gate
Answer: D
What is the output of a NAND gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of a NOR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which logic gate has an output of HIGH (1) only when both inputs are LOW (0)?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: A
What is the output of a XOR gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B

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)

• • SET 1: DLD MCQs with answers (dld mcqs with answers)
  • SET 2: DLD MCQs (dld basic mcqs)
  • SET 3: DLD MCQs (solved mcqs of dld)
  • SET 4: DLD MCQs (dld repeated mcqs)
  • SET 5: DLD MCQs (dld important mcqs)
  • SET 6:DLD MCQs DLD Solved MCQs Answers PDF

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