sequential (46) no realistic serial circuit (inverter)

 https://wodewangzhishime.blogspot.com/2022/06/satellite-for-loop.html?m=1

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Ref: https://chihaukam.blogspot.com/2024/06/blog-post.html?m=1

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John: There're 2 pictures above. They are the circuit of inverter. Which one is correct?

Me: Logically, the 1st picture is correct.

John: Why?

Me: I show it to you in code.

John: OK.

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If (input side = Up cycle)

{

NPN = UP cycle and NPN = saturated.

PNP = UP cycle and PNP = cut off.

The output = 0.

}

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John: You're wrong. The 2nd picture is correct also. I show it to you in code.

Me: OK.

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If (input side = Up cycle)

{

NPN = Up cycle and NPN = saturated.

PNP = Down cycle and PNP = saturated.

}

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Me: When the input side is Up cycle, the gate of PNP is down cycle. It is impossible.

John: It is possible.