up/down counter

Discussion in 'The Projects Forum' started by bwaley, Jun 22, 2008.

  1. bwaley

    Thread Starter Member

    Jun 1, 2008
    27
    0
    can somebody help get the choice of D flipflop and up/down counter that can work in rotary encoders such that counting can be incremented in one direction and decrement in the other direction.my Vcc/Vdd should be above 10V.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Take a look here:
    CMOS Presettable Binary Up/Down Counter: http://focus.ti.com/docs/prod/folders/print/cd4516b.html

    The CD4510B is BCD, the CD4516B is binary.
    If you're thinking of sending the output to 7-segment displays, use the CD4510B. You would still need a BCD to 7-segment decoder/driver though.

    What encoder do you have?
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    To sense direction, the encoder has to have quadrature outputs, plus some external logic to generate the up/down signal.
     
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