Need help to double check in this timing diagram of a latch

[kafor1]

Hello guys, i wanted to know if my answer to this assignment is correct. And i also wanted to know what is the function of this circuit. I tried searching for answers but to no avail i couldn't find it. Help is appreciated. Many thanks

 

[Harald Kapp]

i wanted to know if my answer to this assignment is correct.

For the first part: your timing diagram looks correct. Only you could have drawn the edges on the "C" signal also slewed as on "A", but that is a minor thing as the "S" signal also is not slewed.

i also wanted to know what is the function of this circuit.

That would be the answer to the second part of the assignment. Our policy is not to directly answer homework questions.
Here's a hint: consider "S" as a clock signal, then compare input "A" and output "C". This circuit is a fairly standard circuit and you should be able to find the answer with this information at hand.

 

[AnalogKid]

Your drawing shows B changing state in-between the S clock edges. Assuming that the flipflops are standard clocked devices, not transparent latches, this is incorrect.

Actually . . . The S signal is shown going into an "en"able input, not a clock input. This implies that the devices are transmission gates, not flipflops. While I think this is just a case of a sloppy question, you might want to get some clarification on this before committing to an answer. Or preface your answer with a big IF.

ak

 

[Harald Kapp]

Assuming that the flipflops are standard clocked devices, not transparent latches, this is incorrect.

As there is only an /EN or EN input, respectively, these elements are latches, not flipflops. I take it the idea of this assignment is to make the student aware of the difference between a latch and a flipflop.
'nough said - to keep me from solving the task

 

[kafor1]

For the first part: your timing diagram looks correct. Only you could have drawn the edges on the "C" signal also slewed as on "A", but that is a minor thing as the "S" signal also is not slewed.

That would be the answer to the second part of the assignment. Our policy is not to directly answer homework questions.
Here's a hint: consider "S" as a clock signal, then compare input "A" and output "C". This circuit is a fairly standard circuit and you should be able to find the answer with this information at hand.

As there is only an /EN or EN input, respectively, these elements are latches, not flipflops. I take it the idea of this assignment is to make the student aware of the difference between a latch and a flipflop.
'nough said - to keep me from solving the task

yeah i actually agree, i was going to write master slave d flip flop configuration but i changed my mind seeing the enable input was used. what i wrote is 2 transparent latches in series. all in all i think my answer in the timing diagram is correct, not yet checked by the teacher but my gut tells me it is correct.

 

[Harald Kapp]

So what is the difference between a "master slave flipflop" and "two transparent latches in series"? Or is there any difference at all? Note that the enable inputs are complementary on the two latches.