sequential (30) shift direction

https://wodewangzhishime.blogspot.com/2022/06/satellite-for-loop.html

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Ref: https://wodewangzhishime.blogspot.com/2022/05/httpswodewangzhishime_18.html .

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There're 5 conditions on which left or right shift doesn't work.

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1) The latch is being preset and clear.

2) The latch is feedbacking.

3) The latch is being level-trigger.

4) The flip flops is at the stage of toggling.

5) The commutator is idle (no up , no down)

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This picture is just my own design.

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If the commutator is at 1, NPN is saturated,right shift is available.

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If the commutator is at 0, PNP is saturated,left shift is available.

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Me: Now, we mention condition_4. . The commutator is idle. . No Up cycle. . No Down cycle.

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John: In this case, no right shift. . No left shift.