Latch and flip flops two latches latch can be

Info icon This preview shows pages 23–28. Sign up to view the full content.

Latch and Flip-flops (two latches) Latch can be considered as a door CLK = 0, door is shut CLK = 1, door is unlocked A flip-flop is a two door entrance CLK = 1 CLK = 0 CLK = 1 23
Image of page 23

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

D Flip-Flop (Delay) D CLK Q Q’ Id D Q(t) Q(t+1) 0 0 0 0 1 0 1 0 2 1 0 1 3 1 1 1 Characteristic Expression Q(t+1) = D(t) 0 0 1 1 0 1 PS D 0 1 State table NS= Q(t+1) 24
Image of page 24
JK F-F J CLK Q Q’ 0 0 0 1 ? 1 1 0 1 ? PS JK 00 01 10 11 State table Q(t+1) K 25
Image of page 25

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

JK F-F J CLK Q Q’ Characteristic Expression Q(t+1) = Q(t)K’(t)+Q’(t)J(t) 0 0 0 1 1 1 1 0 1 0 PS JK 00 01 10 11 State table Q(t+1) K 26
Image of page 26
T CLK Q Q’ Characteristic Expression Q(t+1) = Q’(t)T(t) + Q(t)T’(t) 0 0 1 1 1 0 PS T 0 1 State table Q(t+1) T Flip-Flop (Toggle) 27
Image of page 27

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Using a JK F-F to implement a D and T F-F J K Q Q’ D CLK D flip flop J K Q Q’ T CLK T flip flop 28
Image of page 28
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '06
  • Rosing
  • Logic gate, CLK, Flip-flops, Flip-flop, Latch, Qprev

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern