Valid and invalid distributive law

  1. Is the following distributive law valid or invalid? Provide your answer. Hint: use a truth table
    to get the answer for each side of the equation. Check whether they are the same or not. (33.3
    points)
    x XOR (y + z) = (x XOR y) + (x XOR z)
  2. Draw the logic diagram of a 2-bit encoder, a circuit with four input lines, exactly one of which
    is high at any instant, and two output lines whose 2-bit binary value tells which input is high.
    (33.3 points)
  3. Why have multicore chips suddenly appeared? Are there technological factors that have paved
    the way? Does Moore’s law play a role here? (33.4 points)

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