Hi everyone, i salvaged an old microphone form an acer laptop.
I think its an SPI or I2C bus microphone. Please guide me how to connect it to arduino uno
I found a link online
https://sp-laptop.com/microphone/acer-aspire-4736-mic-microphone-w-cable-cy100003c00-m
Buy a microphone that has documentation, example code and library. It takes lots of knowledge and experience to dig into things like that.
It's not any plug and play.
It does look like an I2S microphone.
There is no way you can use this or any other I2S source on an Uno.
You need something with hardware that supports this bus, like a Arduino Zero or better.
You really are keen on salvaging parts from this particular roadkill, aren't you? 
But a laptop is not a microcontroller, and the interfaces are quite different.
Looks 1 pin short for I2S
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