sequential (49) Chosen Clock line (Real and Virtual)
https://kamchihau.blogspot.com/2022/12/httpskamchihau.html
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Ref: https://wodewangzhishime.blogspot.com/2022/02/httpswodewangzhishime_26.html .
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John: Take a look.
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Me: Ok.
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John : See the 1st picture. In fact the parallel input and output line is virtual.
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Me: The Chosen Clock line is virtual either.
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John : Yes, see the 2nd picture. Do you see the Question Mark ?
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Me: Question Mark ? Yes, I do see them.
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John: The Question Mark is the location where you gotta choose the Clock line, e.g., the Clock line of the System, the Clock line of the Satellite's Antenna, the Clock line of RJ45, etc.
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John : Do you see real Clock line and Virtual Clock line ?
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Me: Yes,
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John : Take a look.
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At the 1st Level, the Clock line and the output line are real. At the 2nd Level, the Clock line and Output line are virtual.
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At the 1st Level, the Clock line and the input line are real. At the 2nd Level, the Clock line and input line are virtual.