Synchorous counter with parallel load

Discussion in 'Homework Help' started by nyasha, Oct 26, 2010.

  1. nyasha

    Thread Starter Active Member

    Mar 23, 2009
    90
    1
    Is my design correct ?
     
  2. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    Unfortunately, no.

    The idea of using a MUX to select between input and counting is correct, but:

    The counter itself is wrong. See here: http://www.allaboutcircuits.com/vol_4/chpt_11/3.html for correct counter circuits.

    The input method is wrong. A T-Flip Flop doesn't store what it is fed, unlike the D-FF. Therefore, feeding it the desired bit doesn't mean it will be stored too. You should find a way to handle the T-FF to make it do what you want (hint: XOR gate). Alternatively, you can switch for a D-FF (which will change the counter circuit, too).
     
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