In logic circuits world, most of the engineers do not like the signal to stay in unknown state. This is the time when a pull-up or pull-down resistor needed, to make sure the signal settle at ‘1’ or ‘0’.
Sometimes, life is a maze. I do not know what I want. I think I am in high-impedance mode now.
I need a pull-up or pull-down resistor.
Labels: 胡思乱想
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