Starter quiz
- What is the order of precedence for Boolean operators?
- OR, AND, NOT
- NOT, AND, OR ✓
- AND, OR, NOT
- NOT, OR, AND
-
- Which logic gate outputs True only when both inputs are True?
- AND ✓
- OR
- NOT
-
- A circuit diagram is used to ...
- represent a logical expression as letters.
- identify why a circuit isn't working and debug it.
- represent a logic circuit as a picture. ✓
-
- A logic circuit uses two or more ______ components to implement a more complex logical statement.
- 'logic gate' ✓
- Identify the input or inputs for this sentence: "I will go to the park if my friend is not busy, and it is sunny".
- park
- busy ✓
- sunny ✓
-
- Put the steps to write a logic statement in order.
- 1⇔Identify and label the inputs and the outcome.
- 2⇔Identify the logical operators.
- 3⇔Remove the rest of the words.
Exit quiz
- A truth table is a table showing the outputs for all possible combinations of the ______ to a logic gate or logic circuit.
- 'inputs' ✓
- What is the output of the Boolean expression NOT (True AND False)?
- True ✓
- False
- Which Boolean expression represents the following scenario: "I will go to the park if it is sunny OR it is NOT raining."
- NOT sunny AND raining
- sunny OR NOT raining ✓
- sunny AND NOT raining
- NOT sunny OR raining
-
- What is the output of the Boolean expression (True AND False) OR True?
- True ✓
- False
- A truth table with three inputs will have how many rows?
- 4
- 6
- 8 ✓
- 12
-
- In a truth table for the expression A AND (B OR C), which columns would you include?
- A, B, C, A AND B, A AND (B OR C)
- A, B, C, B OR C, A AND (B OR C) ✓
- A, B, C, A OR C, A AND (B OR C)
- A, B, C, A AND C, A AND (B OR C)
-
Worksheet
Loading worksheet ...
Presentation
Loading presentation ...
Video
Lesson Details
Key learning points
- A truth table is a way of summarising and checking the logic of a circuit.
- The table shows all possible combinations of inputs and, for each combination, the output the circuit will produce.
Common misconception
A truth table can only have the column headings of single inputs like A, B, or X.
A truth table can have column headings that calculate the value of the expression, for example (A OR B).
Keywords
Truth table - a table showing the outputs for all possible combinations of inputs to a logic gate or logic circuit
Boolean expression - an expression that evaluates to either True or False
+