I don't know what is the actual mechanism.
When the CPU sets that register(GPSET)'s bit to 1, what entity/element reads that and is responsible to activate the electric line to HIGH? How is this done?
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1It is an electronic device. Perhaps study electronics if you want to know how it works.– joanNov 21 at 15:22
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Start by learning what a transistor is and how they are used to implement logic gates.– goldilocks ♦Nov 21 at 18:23
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@joan thanks for your amazing help. I studied electronics, but I don't have studied the mechanism in the question. so if you want to help, just redirect me to some keyword so that I can investigate.– AllexjNov 21 at 21:51
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@goldilocks thanks for your amazing help. I studied electronics, but I don't have studied the mechanism in the question. so if you want to help, just redirect me to some keyword so that I can investigate.– AllexjNov 21 at 21:51
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"I studied electronics, but I don't have studied the mechanism in the question" o_O en.wikipedia.org/wiki/Hardware_register ...Like I said, transistors (mostly). There's nothing special about the GPIOs, they are the same as the elementary components of any MC or processor that carry a signal (so, very basic electronics wise): en.wikipedia.org/wiki/General-purpose_input/output Something else to consider: XY problem– goldilocks ♦Nov 22 at 11:45
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