counter

Discussion in 'The Projects Forum' started by kuxz2008, Nov 30, 2009.

  1. kuxz2008

    Thread Starter Member

    Nov 16, 2009
    84
    0
    i hve a circuit that count from 0 to 7 (0000-0111)(motor moving forward) then from 7 to 0(motor reversing).
    the circuit that i hve drawn is to detect 7 then it will produce a '1' so tht QA will be '1' and the relay will be on and direction of motor is reversing.

    the problem is that once it count down from 7 to 0, after 0 it will count from 7 again. wht gate do i need in order tht after counting down from 7 to 0, it will then count up from 0 to 7 and the cycle repeat.
     
    • IMG.jpg
      IMG.jpg
      File size:
      177.1 KB
      Views:
      32
Loading...