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→Android Architecture
Key principles
'''1. Linux Kernel ''' - proven driver model, memory and process management, etc. (a core service of a reliable operating system)
'''2. Libraries ''' (written in C/C++)
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'''3. Android Runtime'''
3.1 Core Libraries written in JAVA such as: utils, collection, i/o, etc.
3.2 Dalvik Virtual Machine runs '''dex files''' (bytecodes efficient for small processors)
'''4.Application Framework'''