AND

• What is the output of an AND gate when all inputs are true?

  TRUE (1)
• What happens to the output when either input A or B is 0 in an AND gate?

  The output is always 0
• Where are the inputs located on the AND gate symbol?

  On the left side
• What does the symbol for the AND gate resemble?

  A D lying on its side
• What is the truth table for the AND gate?

  A B Q: 0 0 0, 0 1 0, 1 0 0, 1 1 1
• What does an AND gate check in boolean logic?

  It checks if all inputs are true (1)
• What is the output of the AND gate symbol?

  A • B
• What is the purpose of an AND gate in boolean logic?

  • Returns TRUE (1) only if all inputs are TRUE (1)
  • Example: "If you study hard AND eat well, you will pass the exam."
• What are the two inputs to an AND gate?

  • Input A
  • Input B
• What is the output of A AND B when A = 1 and B = 1?


  1
• What are the input signals to the AND gate?

  A and B
• What is the output of A AND B when A = 1 and B = 0?

  0
• What is the output of the AND gate for different input combinations?

  • A = 0, B = 0: Output = 0
  • A = 0, B = 1: Output = 0
  • A = 1, B = 0: Output = 0
  • A = 1, B = 1: Output = 1
• What is the boolean expression for two inputs A and B using an AND gate?

  A AND B
• What is the output of an AND gate when both inputs are 1?

  The output is 1.
• How does the AND gate work?

  • The AND gate outputs a 1 only when both input signals A and B are 1
  • Otherwise, the output Q is 0
• How would you determine the state of the lamp in the circuit diagram in part (b)?

  • The lamp will be on (lit) only when both switches A and B are closed (in the 1 state)
  • This is because the circuit diagram represents an AND gate, where the output C (the lamp) is 1 only when both inputs A and B are 1
• What is the purpose of the circuit diagram shown in part (a)?

  • The circuit diagram represents a logic gate, specifically an AND gate
  • The AND gate takes two inputs (A and B) and produces an output (C) that is 1 only when both inputs are 1
• If the inputs to an AND gate are A = 1 and B = 0, what will the output be?

  0
• In what scenario would an AND gate output TRUE?

  When all conditions are met
• How does the circuit diagram in part (b) differ from the one in part (a)?

  • The circuit diagram in part (b) shows a more complex circuit with multiple components (switches and a lamp)
  • This circuit represents a real-world application of the logic gate shown in part (a)
• How does an AND gate function in a boolean expression?

  It outputs true only if all inputs are true
• What must be true for the expression A AND B to be true?

  Both A and B must be true
• What is the output of A AND B when A = 0 and B = 0?


  0
• What logical operation does the AND gate represent?

  The logical AND operation
• What is the output of A AND B when A = 0 and B = 1?

  0
• What is required for an AND gate to produce a true output?

  All inputs must be true
• What is the relationship between A, B, and C in the circuit diagram?

  A.B=C
• How are switches connected in an AND gate circuit?

  Switches are connected in series
• When is the output Q of an AND gate 1?

  When both inputs A and B are 1
• What is the output of the AND gate when both switches are closed?

  The lamp lights up
• What is the purpose of an AND gate?

  It outputs a 1 only when both inputs are 1
• What is the name of the logic gate shown in the image?

  AND gate
• If input A is 1 and input B is 0, what will the output C be?

  0
• What must happen for electricity to flow in an AND gate circuit?

  Both switches must be closed
• How many inputs does the AND gate symbol have?

  Two inputs
• What is the symbol for the AND gate shown in part (a)?

  A-B=C
• What is the function of an AND gate in a circuit?

  • Requires all inputs to be true (closed switches)
  • Outputs true (lamp lights) only when all inputs are true
• What are the use cases of the AND gate?

  • Used to implement logical conjunction in digital circuits
  • Commonly used in:
  • Security systems (e.g. requiring two keys to unlock)
  • Robotics (e.g. requiring multiple sensor inputs to trigger an action)
  • Computer processors (e.g. for conditional branching)
• How does the AND gate truth table relate to the circuit diagram?

  It shows both switches must be closed for output