T flip flop circuit, MMExer5.8

PG1995

Joined Apr 15, 2011
832
Hi

Regards
PG

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Zazoo

Joined Jul 27, 2011
114
It's still a counter, it just doesn't cover the full-count. If the device ends up in state 11 (by a glitch) then it just resets.

PG1995

Joined Apr 15, 2011
832
Thank you.

Okay. That means full count could be from 00, 01, 10, 11, but it doesn't cover the last value. By the way, what kind of glitch that could be?

Best regards
PG

Zazoo

Joined Jul 27, 2011
114
ESD is one way that a circuit could end up in an invalid/unused state. Typically you want these unused states to simply transition back to reset (00).

PG1995

Joined Apr 15, 2011
832
Thank you for the information.

Best regards
PG

PG1995

Joined Apr 15, 2011
832
Hi

Please have a look on the attachment. Please check if the part (a) is correct, and please answer the questions related to part (b) so that I can proceed to implement the function. Here is the scan from the solution manual (to someone who doesn't know, it has been found that mostly solution manual gives wrong solution). Thank you very much.

Regards
PG

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Last edited:

Georacer

Joined Nov 25, 2009
5,182
Part a is correct.

Your assessments are correct. When we use the summing symbol Σ, we refer to the SoP form, whereas the multiplication symbol Π, refers to the PoS form.

PG1995

Joined Apr 15, 2011
832
Your assessments are correct. When we use the summing symbol Σ, we refer to the SoP form, whereas the multiplication symbol Π, refers to the PoS form.
I'm sorry to ask this again. So, is it really so, F'(A,B,C,D)=Ʃ(3,8,12,15), for the the function F in the attachment. Thanks.

Best regards
PG

Georacer

Joined Nov 25, 2009
5,182
Yes, F'=Σ(3,8,12,15), for part b.