Digital Logic Design Quizzes: Test Your Understanding

Question 1

Which of the following is a fundamental theorem of Boolean algebra that relates the inverse of the sum of two terms to the inverses of each term?

Accepted Answer

De Morgan's theorem

Answer

Commutative property

Answer

Associative property

Answer

Distributive property

Question 2

What is the primary purpose of a clock signal in a sequential logic circuit?

Accepted Answer

To synchronize the operation of the circuit

Answer

To provide power to the circuit

Answer

To reset the circuit

Answer

To control the output of the circuit

Question 3

What is the primary purpose of a state diagram in digital logic design?

Accepted Answer

To graphically represent the sequence of states that a sequential logic circuit can be in and the conditions that cause transitions between states.

Answer

To simplify the design of a combinational logic circuit

Answer

To troubleshoot a digital logic circuit

Answer

To generate the truth table of a logic circuit

Question 4

Which of the following is a **sequential** logic circuit?

Accepted Answer

Flip-flop

Answer

Adder

Answer

Decoder

Answer

Multiplexer

Question 5

The process of simplifying Boolean expressions using algebraic rules is known as:

Accepted Answer

Logic minimization

Answer

Logic optimization

Answer

Boolean algebra

Answer

Digital logic design

Question 6

Which of the following number systems is **binary**?

Accepted Answer

Binary

Answer

Decimal

Answer

Octal

Answer

Hexadecimal

Question 7

The minimum number of literals required to express the function F(A, B, C) = A'B + BC' is:

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 8

In a synchronous sequential circuit, the output changes:

Accepted Answer

When the clock signal changes

Answer

At the same time as the inputs

Answer

At a fixed time interval after the inputs

Answer

When the reset signal is asserted

Question 9

Which of the following is NOT a basic logic gate used in digital logic?

Accepted Answer

FULL ADDER

Answer

AND

Answer

OR

Answer

NAND

Question 10

Simplify the following Boolean expression and select the correct output: AB' + A'B?

Accepted Answer

1

Answer

0

Answer

A

Answer

(AB'+A)B

Question 11

What is the main function of a decoder circuit?

Accepted Answer

Converts binary code to a unique output line

Answer

Converts decimal code to binary code

Answer

Performs addition of two binary numbers

Answer

Compares two binary numbers

Question 12

Which of the following is NOT a fundamental operation in Boolean algebra?

Accepted Answer

EXPONENTIATION

Answer

AND

Answer

OR

Answer

XOR

Question 13

What is the primary purpose of a flip-flop in a sequential logic circuit?

Accepted Answer

Store binary information

Answer

Perform logical operations

Answer

Amplify signals

Answer

Generate clock pulses

Question 14

Which type of programmable logic device is commonly reconfigurable?

Accepted Answer

FPGA

Answer

CPLD

Answer

ROM

Answer

RAM

Question 15

What is the main purpose of a multiplexer in digital logic?

Accepted Answer

Selects one of several input signals based on a control signal

Answer

Amplifies a signal

Answer

Generates a clock pulse

Answer

Stores binary information

Question 16

In a digital logic circuit, what is a critical path?

Accepted Answer

The longest path from input to output in terms of gate delays.

Answer

The shortest path from input to output in terms of gate delays.

Answer

The path with the largest number of gates.

Question 17

In a 2-input AND gate, what value will be produced at the output when both its inputs are set to '1'?

Accepted Answer

1

Answer

2

Answer

0

Answer

Indeterminate

Question 18

Which of the following is correctly identified as a type of flip-flop?

Accepted Answer

D Flip-Flop

Answer

RAM Flip-Flop

Answer

ROM Flip-Flop

Answer

EEPROM Flip-Flop

Question 19

Describe the primary function of a demultiplexer:

Accepted Answer

To selectively route a single input signal to one of multiple output lines based on a select signal.

Answer

To generate a clock signal

Answer

To amplify a signal

Question 20

Identify the logic family known for its low power consumption:

Accepted Answer

CMOS

Answer

TTL

Answer

NMOS

Answer

ECL

Question 21

Which of the following is considered a hardware description language?

Accepted Answer

Verilog HDL

Answer

Python

Answer

Java

Answer

C++

Question 22

Identify the key advantage of utilizing a programmable logic device (PLD):

Accepted Answer

It can be reconfigured to implement various logic functions.

Answer

It operates faster than a microprocessor.

Answer

It is more cost-effective than an ASIC.

Question 23

Which logic gate is distinguished as a universal logic gate?

Accepted Answer

NAND gate

Answer

AND gate

Answer

OR gate

Answer

XOR gate

Question 24

Describe the purpose of a Schmitt trigger in digital circuits:

Accepted Answer

To eliminate signal noise through the implementation of hysteresis.

Answer

To amplify signals

Answer

To convert digital signals into analog signals