Question 1: Complete the truth table for an AND gate with two inputs, A and B. Fill in the output column (Q) based on the inputs.

Answer: A | B | Q ---|---|--- 0 | 0 | 0 0 | 1 | 0 1 | 0 | 0 1 | 1 | 1

Question 2: Complete the truth table for an OR gate with inputs A and B. Fill in the output column (Q).

Answer: A | B | Q ---|---|--- 0 | 0 | 0 0 | 1 | 1 1 | 0 | 1 1 | 1 | 1

Question 3: Complete the truth table for a NOT gate when the input is A.

Answer: A | Q ---|--- 0 | 1 1 | 0

Question 4: Draw a logic circuit that uses AND, OR, and NOT gates to produce an output that is true only when either input A is true or input B is false. Label each gate clearly.

Answer: A correct sketch would include: An AND gate taking inputs A and B, a NOT gate inverting B, and an OR gate combining the output of the AND gate and the NOT gate. The final output is from the OR gate.

Question 5: Sketch a logic circuit that implements an XOR gate using only AND, OR, and NOT gates.

Answer: A correct sketch involves: (A AND (NOT B)) OR ((NOT A) AND B). The circuit should show NOT gates on inputs A and B, two AND gates, and one OR gate combining their outputs.

Question 6: Describe in words how a NOR gate functions and what its output is when both inputs are true.

Answer: A NOR gate outputs true only when both inputs are false. If both inputs are true, the NOR gate's output is false.

Question 7: Explain the difference between an AND gate and an OR gate in terms of their output when both inputs are true.

Answer: An AND gate outputs true only when both inputs are true. An OR gate outputs true when at least one input is true, including when both are true.

Question 8: Complete the truth table for a NAND gate with inputs A and B.

Answer: A | B | Q ---|---|--- 0 | 0 | 1 0 | 1 | 1 1 | 0 | 1 1 | 1 | 0

Question 9: Complete the truth table for an XOR gate with inputs A and B.

Answer: A | B | Q ---|---|--- 0 | 0 | 0 0 | 1 | 1 1 | 0 | 1 1 | 1 | 0

Question 10: Sketch a logic circuit that combines two AND gates, one NOT gate, and one OR gate to produce an output that is true only when either input A is true and input B is false, or input A is false and input B is true. Label all gates.

Answer: A correct sketch would show: (A AND (NOT B)) feeding into an OR gate, and ((NOT A) AND B) feeding into the same OR gate. The output of the OR gate is the final output.

Question 11: Describe what a logic circuit is and how it is used in digital devices.

Answer: A logic circuit is a network of logic gates connected together to perform specific logical functions. It is used in digital devices to process binary data and make decisions based on logical conditions.