How does this have 24 transistors?

  • Thread starter jaus tail
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  • #1
jaus tail
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TL;DR Summary
Master slave based edge triggered register
1569135063532.png


Our professor is teaching this circuit and she mentioned there are 24 transistors. But I counted and it comes out to be 22
T1 to T4 needs 2 (transistor) * 4 = 8 transistors
Each inverter needs 2 transistors. so 7 inverters need 14 transistors.
total 22 transistors.
Unless we're also creating a Q' in the output, so that'll need 2 more transistors. But that's not mentioned in the circuit.
 

Answers and Replies

  • #2
Borek
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Why don't you ask her, showing your calculations?
 
  • #3
jaus tail
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Why don't you ask her, showing your calculations?
Because I missed her class and I saw this in her video lecture. And she is in another campus. Her lectures are conducted online.
 
  • #4
Borek
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You can always try an email :smile:
 
  • #5
jaus tail
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You can always try an email :smile:
Then she'll ask me why I missed her class, and I was at the gym at that time.
 
  • #6
NascentOxygen
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Unless we're also creating a Q' in the output, so that'll need 2 more transistors.
I think that is probably the answer. We'll always be needing complementary outputs. There is a Q’ available in the internals, but loading that point may upset internal switching/timing performance. An additional inverter will isolate the load.
 
  • #7
sophiecentaur
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Then she'll ask me why I missed her class, and I was at the gym at that time.
Would she not believe that you re-read your notes and only thought of the question later?
Or do you feel too guilty? :wink:
 

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