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General-purpose input/output (GPIO)

Ciro Santilli (@cirosantilli, 37) Technology Area of technology Electronics Electronic component Electrical connector
Updated 2025-07-16  0 By others on same topic  0 Discussions Create my own version
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    • Pulse width modulation General-purpose input/output

Pulse width modulation

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General-purpose input/output
GPIO generally only supports discrete outputs.
But for some types of hardware, like LEDs and some motors, the system has some inertia, and if you switch on and off fast enough, you get a result similar to having an intermediate voltage.
So with pulse width modulation we can fake analog output from digital output in a good enough manner.

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