Android is an open source software stack and operating system developed by Google and the Open Handset Alliance. It uses a Linux kernel with middleware, libraries and APIs written in C/C++ and application software running on an application framework and virtual machine. The Android architecture includes secure data storage using SQLite databases and files, as well as an application execution environment using the Dalvik virtual machine to run dex-format files efficiently across multiple processes with an activity-based lifecycle.

1. ANDROID OS Seminar By Ganesh Waghmare Seminar Guide Prof. Sukhada Bhingarkar

2. OUTLINE 2. INTRODUCTION TO PLATFORM 3. SECURE DATA STORAGE 4. EXECUTION ENVIRONMENT 1. INTRODUCTION TO ANDROID

5. ANDROID ARCHITECTURE Fig. Architecture of Android OS

9. Application Framework Enable applications access data from other applications Providing access to non-code resources Notification manager Content provider : Resource Manager : Window Manager Manages the lifecycle of applications Activity Manager :

11. Architecture of Data Storage