From: http://blog.csdn.net/maxleng/article/details/5476544
Mobile phone hardware format
This section may have nothing to do with Android, but now the Android system is more of a mobile terminal development platform. This section describes the work behind Android-what is the hardware for Android management, the essence of Android is to manage these hardware parts to provide users with a smart mobile terminal with better experience and faster speed. The understanding of mobile phone hardware forms is to give us a perceptual knowledge of the composition of mobile phone hardware, and let programmers know that the code in the system is the part of management, that is to say, what is the purpose of building bricks and giving thinking a stretch.
In order to have a deeper understanding of embedded systems such as mobile phones, I made the following mobile phone hardware structure mind map. In this figure, we can see what makes up the mobile phone hardware, I have a preliminary understanding of why the mobile phone Management Platform requires so many management frameworks and layers to understand the design intent of Android designers at the bottom layer. This mind map is actually just.
We know that the hardware architecture of an embedded system like mobile phones is described as follows:
Application processor + modem + RF
For the application processor, the most essential description of the designer is input and output. For the power management, connection mechanism, and multimedia of mobile devices, it is an important consideration, these steps will be reflected on the software platform.