Would I be able to tell that a multiplexer can only ouput one value at a time ?

Using Arduino LEDs and Multiplexing
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So, I'm trying to make a sort of midi controller using multiplexers.

Basically, I want a button press on a multiplexer to play a note on my arduino. I'm to understand that one multiplexer can only send one output value at a time. So, if I were to press more than one button at the same time (a chord) would I be able to hear the delay between the two notes being read?

I'm really new to arduino and electronic stuff, so any help is GREATLY appreciated. Thanks!

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You are quite correct you can only get one output at a time from a multiplexer. Also be aware that there is no such thing at pressing two buttons at the same time.

However while there would be a delay it will be so short you will not be able to perceive it.

A lot depends on how quickly your multiplexer is scanning, and how you have written the software.

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