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  https://wodewangzhishime.blogspot.com/2023/11/httpswodewangzhishime.html . Ref:  https://wodewangzhishime.blogspot.com/2023/11/httpswodewangzhishime.html . . Me: I mention stack overflow in this article. . You can have a look at this article first.  https://wodewangzhishime.blogspot.com/2023/11/httpswodewangzhishime.html .  . Look at the first picture. If you input 3-1-4-2-4-1-3, the output is 3-3-3-3-3-3-3-3. You must 3-(input down cycle)1-(input down cycle)4-(input down cycle)2-(input down cycle)4-(input down cycle)1-(input down cycle)3 . Or. . You can 3-(power source, down cycle)1-(power source ,down cycle)4-(power source ,down cycle)2-(power source ,down cycle)4-(power source ,down cycle)1-(power source ,down cycle)3

https://wodewangzhishime.blogspot.com/2023/11/ref-httpswodewangzhishime.html . Ref: https://wodewangzhishime.blogspot.com/2023/11/ref-httpswodewangzhishime.html .  . . Those pictures are the difference between a latch and a modulator. . 1) The first picture is a latch. . During an Up cycle, I input 3-1-4-2-4-1-3. . The output remain 3-3-3-3-3-3-3. . Why ?? Because, it is a latch. . The output depends on the feedback. . If I wanna a 3-1-4-2-4-1-3, what should I do?? You should 3-(down cycle)1-(down cycle)4-(down cycle)2-(down cycle)4-(down cycle)1-(down cycle)3 . 2) The second picture is a modulator. . If I input 3-1-4-2-4-1-3, the output is 3-1-4-2-4-1-3. . Why ?? Because, the output is independent from the feeback. . 3) The third pictue is clear. . . . If there is a feedback, it is a latch. . If there is no feedback, it is a modulator.

https://wodewangzhishime.blogspot.com/2023/08/2001-4-airplanes-were-hacked.html?m=1 . Ref: https://wodewangzhishime.blogspot.com/2021/09/httpswodewangzhishime_11.html . . . . . . . John: Look at the first picture. Ther're 2 way of connection of RJ45. Both ways are OK. Let me explain the 2nd picture. Me: OK. John: When Port A is being input, Port B is with the status of outputing. Me: OK. . John: Look at the 3rd picture. When Port B is being input, Port A is with the status of outputing.