Introduction to Boolean Algebra and Logic Gates

Computer Science
Year 9
11 questions
~22 mins
0 views0 downloads

About This Worksheet

This worksheet introduces basic concepts of Boolean algebra and logic gates used in digital circuits. Complete the following questions to test your understanding.

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Full preview • 11 questions

Introduction to Boolean Algebra and Logic Gates

Subject: Computer ScienceGrade: Year 9
Name:
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Untitled Worksheet

Grade Year 9
A

Questions

This worksheet introduces basic concepts of Boolean algebra and logic gates used in digital circuits. Complete the following questions to test your understanding.

Answer all questions in the spaces provided.
1.
Write the truth table for the AND gate with two inputs, A and B, where A and B can be either 0 or 1.
[4 marks]
ABOutput
00
01
10
11
2.
Write the truth table for the OR gate with two inputs, A and B, where A and B can be either 0 or 1.
[4 marks]
ABOutput
00
01
10
11
3.
Write the truth table for the NOT gate when the input A can be either 0 or 1.
[3 marks]
AOutput
0
1
4.
Complete the truth table for a NAND gate with inputs A and B.
[4 marks]
ABOutput
00
01
10
11
5.
Complete the truth table for an XOR gate with two inputs, A and B.
[4 marks]
ABOutput
00
01
10
11
6.
Draw a logic circuit that uses AND, OR, and NOT gates to produce an output that is true only when A is true and B is false.
[6 marks]
Drawing / Sketch space
7.
Sketch a logic circuit that represents the Boolean expression: (A AND B) OR (NOT A).
[6 marks]
Drawing / Sketch space
8.
Explain in your own words what a Boolean variable is.
[3 marks]
9.
If A is 1 and B is 0, what is the output of an OR gate with inputs A and B?
[2 marks]
10.
If A is 0 and B is 0, what is the output of a NAND gate with inputs A and B?
[2 marks]
11.
Describe what the truth table for a NOT gate looks like when the input is 1.
[3 marks]
AOutput
0
1

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Details

Created
1/2/2026
Updated
1/2/2026
Type
worksheet