3.1. Symbols, Truth Tables, Logic Expressions

Try these first

1. 1.

   What is the output of an AND gate with inputs 1 and 0?

   Hint

   Consider when both inputs must be true.

2. 2.

   Describe the output of an OR gate when both inputs are 0.

   Hint

   Think about the condition for output to be true.

3. 3.

   What is the output of an AND gate if both inputs are 1?

   • 1
   • 0

   Hint

   Remember the conditions for the AND operation.

4. 4.

   True or False: An OR gate outputs false when all inputs are false.

   • True
   • False

   Hint

   Think about all possible input scenarios.

5. 5.

   Design a circuit using AND and OR gates that outputs true only when A is true, B is false and C is true.

   Hint

   Think about how each input interacts with the others.

6. 6.

   Create a complex Boolean expression to represent a circuit with two AND gates and one OR gate to produce a final output.

   Hint

   Visualize how combining outputs of gates creates a simpler or finalized output.