Chapter 4 Gates and Circuits

Read Chapter 4 and classnotes and answer the following questions:.

  1. #55, 56, 57, 59, 62
  2. Verify DeMorgan's Law using truth table: ( A + B + C)′ = A′ ● B′ ● C′
  3. Is A ● B + A ● B′ + A ● B ● A′ = A   true? Explain. (Hint: use Boolean algebra properties where means AND operation, for for OR operation, and for NOT operation.
  4. Is ( A + B ● C′ )′ = A′ ● (B′ + C) true? Explain.