problems on asynchronous circuit

Discussion in 'Homework Help' started by fluteofliar, Dec 22, 2010.

  1. fluteofliar

    Thread Starter New Member

    Dec 22, 2010
    how can i solve this problem,
    For an asynchronous sequential circuit,the sequence of internal state Q1Q2
    obtained is 00,00,01,11,11,01,00 for internal states X1X2:00,10,11,01,11,10,00
    determine its transition table?
  2. Georacer


    Nov 25, 2009
    Maybe you mean that X1 and X2 are the circuit's inputs, rather than states?
    In that case, make a circle (state) for each Q1Q2 pair (00,01...). Then, for each case of X1X2 (00,01...) draw for each circle the transition with an arrow. You can do this for evey pair that the sequence informs you for.
    For example, you can tell by your data that from 00 you go to 00 with an input of 00 and
    from 00 you go to 01 with an input of 10.

    I guess you can take any case that isn't reported as Don't Care (X).