Help w/ sequential circuit, completing a timing diagram

Discussion in 'Homework Help' started by nandroidgarden, Oct 22, 2014.

  1. nandroidgarden

    Thread Starter New Member

    Oct 22, 2014
    I am having an issue completing a timing diagram for a jk flip flop. When the inputs are already laid out there are no issues but when I am given just the circuit diagram I cant complete it. I would appreciate some help sending me in the right direction.
    • up.pdf
      File size:
      8.3 KB
  2. WBahn


    Mar 31, 2012
    First, note that your circuit has both a JKFF and a TFF.

    What do you mean by "when the inputs are already laid out"? You have three inputs, Clock, Clr, and X. Are those not already laid out for you in that diagram?

    Start from the beginning of your diagram and determine the outputs of both FF for the initial value of the inputs. Since the Clr is asserted, you don't have to worry about what state they were in before the start of the diagram because the Clr forces them into a known state.