# Logic problems

In this lesson, we will be introduced to the concept of three-input logic problems, and will be taught how to construct a three-input logic diagram, truth table, and expression.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.How many outputs do ALL logic gates have?

1/4

Q2.What would the output of an AND logic gate be if both inputs are True?

2/4

Q3.What would the output of an OR gate be if both inputs are False?

3/4

Q4.What would the output of a NOT gate be if the input is False?

4/4

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.How many outputs do ALL logic gates have?

1/4

Q2.What would the output of an AND logic gate be if both inputs are True?

2/4

Q3.What would the output of an OR gate be if both inputs are False?

3/4

Q4.What would the output of a NOT gate be if the input is False?

4/4

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Logic problems

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How many input combinations are there for a 3 input truth table?

1/3

Q2.drive = (accelerator or cruise control) and keys - This is an example of what type of logical tool?

2/3

Q3."The garage door will open if the proximity sensor is activated and the door is not block, or if the button is pressed" - how many logic gates would you need to draw a logic diagram of this expression?

3/3

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Logic problems

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How many input combinations are there for a 3 input truth table?

1/3

Q2.drive = (accelerator or cruise control) and keys - This is an example of what type of logical tool?

2/3

Q3."The garage door will open if the proximity sensor is activated and the door is not block, or if the button is pressed" - how many logic gates would you need to draw a logic diagram of this expression?

3/3

# Lesson summary: Logic problems

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance