Question 1: Complete the truth table for an AND gate with two inputs, A and B. Fill in the output column for all possible input combinations.

Answer: Inputs: A, B, Output; A=0, B=0, Output=0; A=0, B=1, Output=0; A=1, B=0, Output=0; A=1, B=1, Output=1.

Question 2: Complete the truth table for an OR gate with two inputs, A and B. Fill in the output column for all possible input combinations.

Answer: Inputs: A, B, Output; A=0, B=0, Output=0; A=0, B=1, Output=1; A=1, B=0, Output=1; A=1, B=1, Output=1.

Question 3: Complete the truth table for a NOT gate with input A. Fill in the output for both possible input states.

Answer: Input: A=0, Output=1; Input: A=1, Output=0.

Question 4: Draw a simple logic circuit that uses an AND gate and an OR gate to produce an output. Label each gate clearly.

Answer: A correct sketch would show two inputs feeding into an AND gate and the same or different inputs feeding into an OR gate; outputs of both gates are then connected to a final output. Each gate labeled correctly.

Question 5: Describe what happens to the output of an AND gate if one of its inputs is always 0 regardless of the other input.

Answer: The output will always be 0 because an AND gate requires both inputs to be 1 to produce a 1.

Question 6: Sketch a truth table for a NAND gate with two inputs, A and B. Include all possible input combinations and the correct output.

Answer: Inputs: A, B, Output; A=0, B=0, Output=1; A=0, B=1, Output=1; A=1, B=0, Output=1; A=1, B=1, Output=0.

Question 7: Explain in your own words what a logic gate is and how it might be used in a computer.

Answer: A logic gate is a basic building block of digital circuits that performs a simple logical operation based on its inputs. It is used to process binary data (0s and 1s) in computers, enabling decision-making and computation.

Question 8: Draw a NOT gate and show its input and output. Label the input and output clearly.

Answer: A correct sketch is a triangle pointing to the right with a small circle at the tip (representing the NOT operation), with 'A' labeled as input entering the triangle and 'Output' labeled at the circle.

Question 9: What is the output of an OR gate if both inputs are 0?

Answer: The output is 0.

Question 10: Complete the truth table for an XOR gate with inputs A and B. Fill in the output for all combinations.

Answer: Inputs: A, B, Output; A=0, B=0, Output=0; A=0, B=1, Output=1; A=1, B=0, Output=1; A=1, B=1, Output=0.

Question 11: Describe a real-life example where a logic gate might be used in everyday technology.

Answer: A logic gate might be used in a door security system where an AND gate requires two conditions (like a correct code and a fingerprint) to be true before unlocking the door.