ROMS and MUXs = ???

Discussion in 'Homework Help' started by ][ Shocked ][, Dec 12, 2009.

  1. ][ Shocked ][

    Thread Starter Member

    Apr 13, 2009
    hello everybody

    while i was solving old exams problems, i found a really hard problem

    it's as follows


    what goes in the MUX is A and B
    and what goes in the ROM is C and D

    am I starting it right?
  2. lihle

    Active Member

    Apr 12, 2009
    remember one thing,if you want to implement the given problem first try to come up with a truth table,treating the sum of minterms form m10-m15 as dont care condition.
    then you must not that the rom is made up of a decoder and for the decoder is a 2 x 4 decoder and the multiplexer is a 4-1 mux.
    the ouput of the decoder goes through the OR gates then to the MUX.

    try to get a book by morris mano, it will help you more