# Digital logics-How to calculate the min time of my system?

Discussion in 'Homework Help' started by Ryan2, Jul 29, 2015.

1. ### Ryan2 Thread Starter Member

May 29, 2015
31
0
Hello everyone, I've already known of time settings of F.F and about all circuits! .. but once I try to find the min time of any system, I just found myself stuck in, and get confused of ..
I've a question that I'm struggling in it and not getting any proper result ... any help or hints please?
the question is over this website:
http://postimg.org/image/syvipmgsj/

thanks much.

2. ### WBahn Moderator

Mar 31, 2012
18,087
4,917
What is "Tcd"? It can't be time from clock to data, since that doesn't apply to anything other than the flip flop.

3. ### Ryan2 Thread Starter Member

May 29, 2015
31
0
Tcd is the lil time which remains constant as the input before the clock..

My attempt is how to find the min T for being the system worked properly?

4. ### Ryan2 Thread Starter Member

May 29, 2015
31
0
T is the whole time of all times in the systems...

5. ### WBahn Moderator

Mar 31, 2012
18,087
4,917
So what does a "lil time which remains constant as the input before the clock" of "4" mean for a AND or an OR gate or of "1" for a NOT gate?

Answer: Since none of these gates have a clock, it is meaningless.