Understand and explain microphone in more depth

[BeatrizPer]

• [x] add instructions for how to understand the part (with reference to datasheet)

[computer-lov]

I am placing this issue under review. The bullet point listed above is covered in section 4 of my individual parts report.

Link: https://docs.google.com/document/d/1B9sd3u-u8swBZ98E6752jMQrhfnkgwvYMWnpLR8MzK4/edit?usp=sharing

[computer-lov]

Reviewed and done