Technical question about iPAd flash memory ,memory,videocard

hello,
I like to know if the ssd or flashmemory and the memory and the video card they are all solderd on logical unit or the motherboard?
and the logical unit is the name of motherboard in iPad.
thanks
johan

Yes. Everything is soldered onto the logic board. There are no removable parts
Here's a picture of the inside of an iPad Air.
http://tr1.cbsistatic.com/hub/i/2013/11/06/f17d0bb4-cb62-4344-b674-fa28c08e5b37/ apple_ipad_air_2013_teardown_048.png
As you can see most of the space is taken up by the battery. Everything else is part of the logic board on the right side.  Including Processor, storage and video Chips

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