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crwdns2933797:0Miroslav Djuriccrwdnd2933797:0crwdne2933797:0
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[* black] The first of the two microphones inside the iPhone (the one that you speak into) is the Knowles S1950. | |
[* black] Knowles describes its [link|http://en.wikipedia.org/wiki/Microphone#MEMS_microphone|MEMS microphones] as being built with a patented CMOS/MEMS technology that allows for very small footprints, lower profiles, and several mounting options. | |
- | [* black] Translation: This microphone is very small |
- | [* black] From a manufacturing viewpoint, a surface-mount design is valuable because it allows |
+ | [* black] Translation: This microphone is very small -- a 3mm x 4mm footprint! And it's [link|http://en.wikipedia.org/wiki/Surface-mount_technology|surface-mount], which means that a machine just pops it onto the logic board for you. |
+ | [* black] From a manufacturing viewpoint, a surface-mount design is valuable because it allows the components to be integrated to the logic board all at once. This eliminates sub-assembly costs, and lowers the [http://en.wikipedia.org/wiki/Bill_of_materials|BOM] cost. It also allows us to have components on both sides of the board, something that's not possible with [link|http://en.wikipedia.org/wiki/Through-hole_technology|thru-hole] technology. |