iPad hardware
One of the key successes of Apple iOS devices is the proper selection of its hardware components. Just like the iPhone, the iPad is also a collection of modules, chips, and electronic components from different manufacturers. Internal images for all iPads can be found in the teardown section of http://www.ifixit.com/Device/iPad.
The following images show the internals of the iPad 3. The images were taken after dismantling the iPad 3 cellular model and were obtained from http://www.chipworks.com/.
The following image shows side two of the iPad 3 cellular model: