PPT on Android Operating System

1. OPERATING SYSTEM
YESHWANTRAO CHAVAN COLLEGE OF ENGINEERING, NAGPUR
DEPT. OF COMPUTER TECHNOLOGY
PRESENTED BY:
DHIRAJ P. NINAVE
ROLL NO. 12
Dhiraj Ninave

2. INDEX
• Introduction.
• History of Android.
• Android Architecture.
• Android Features.
• Development Tools.
• Real Time Application.
• Advantages & Disadvantages
• Conclusion and Future Scope
• References.
Dhiraj Ninave

3. INTRODUCTION
3
• A Software platform and Operating System for
Mobile Devices.
• Full phone software stack including applications.
• Based on the Linux operating system.
• Developed by Google and the Open Handset
Alliance.
• An open platform for developers, users & industry.
• 100 % pure Java code.
Dhiraj Ninave

4. HISTORY
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• July 2005, Google acquired Android Inc., a small
startup company.
• Started as a mobile software development company.
• Developed a Linux-based mobile device OS.
• On 5 November 2007, the Open Handset Alliance
founded.
• First product Android as open source mobile device
platform.
Dhiraj Ninave

5. Open Handset Alliance
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6. Android Architecture
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7. Linux Kernel
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• Android Architecture is based on Linux 2.6
kernel
• Works as a HAL
• Security and Process management.
• Memory management.
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8. Libraries
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• Set of native libraries written in C/C++.
• Interface through Java.
• Surface manager – Handling UI Windows.
• 2D and 3D graphics.
• SQLite – Light Weight Database.
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9. Android Runtime
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• Dalvik VM
• Dex files
• Compact and efficient than class files
• Limited memory and battery power
• Core Libraries
• Java 5 Std. edition
• Collections, I/O etc…
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10. Application Framework
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• Contents Provider
Enable applications access data from other applications
sharing.
• Notification Manager
Enables all applications to display alerts in the status bar.
• Activity Manager
Manages the lifecycle of applications.
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11. Applications
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• Built in and User Applications.
• Can Replace Built in Applications
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12. Android Features
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SOFTWARE FEATURES
• Integrated browser based on the open source WebKit engine.
• SQLite for relational data storage.
• Media support for common audio, video, and still image
formats.
• (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF).
• Dalvik Virtual Machine optimized for mobile devices.
Dhiraj Ninave

13. Android Features
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HARDWARE FEATURES
• Cellular networking : GSM, EDGE, 3G (hardware dependent)
• LAN : Bluetooth, and Wi-Fi (hardware dependent)
• Graphics Hardware Acceleration
• Camera, GPS and Compass (hardware dependent)
• Touch screen and accelerometer for motion sensing.
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14. Development Tools
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• Eclipse IDE.
• Android SDK.
• Android Emulator.
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15. Android Building Blocks
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• Activity -
User Interface Component.
• Intent Receiver -
Wakes up predefined Action.
• Service -
A task – done in background.
• Content Provider -
Sharing data with other processes
Dhiraj Ninave

16. Android Version Released :
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Distribution
Version Code name Release date API level
(December 3, 2012)
4.2 Jelly Bean November 13, 2012 17 1.2%
4.1.x Jelly Bean July 9, 2012 16 9.0%
4.0.x Ice Cream Sandwich December 16, 2011 15 29.1%
3.2 Honeycomb July 15, 2011 13 1.1%
3.1 Honeycomb May 10, 2011 12 0.4%
2.3.3–2.3.7 Gingerbread February 9, 2011 10 47.4%
2.3–2.3.2 Gingerbread December 6, 2010 9 0.2%
2.2 Froyo May 20, 2010 8 9.0%
2.0–2.1 Éclair October 26, 2009 7 2.4%
1.6 Donut September 15, 2009 4 0.2%
Dhiraj Ninave

17. Real Time Application
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• Android@Home
• Google Translate.
• Sony Smart Watch.
• Google TV.
• Galaxy Cameras etc.
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18. Advantages
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Open-
Versions Upgrades-
All applications are equal-
Breaking down boundaries-
Fast and easy development-
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19. Disadvantages
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 Security –
Making source code available to everyone inevitably invites
the attention of black hat hackers.
 Open Source –
Anyone can scrutinize the source code to find vulnerabilities
and write exploits.
 Login –
Platform doesn't run on an encrypted file system and has a
vulnerable log-in.
 Incompetence –
Google’s dependence on hardware and carrier partners puts
the final product out of their control.
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20. Future Scope
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21. Conclusion
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• The community that Android has provided efficiently collects like
minded people on one platform and gives them proper channels to
express themselves and provides them with all the necessary help and
guidance.
• With the expansion of Android, the community based on it would also
expand and this would certainly be useful for people lacking resources
since the aim of the open source community is to bring forward those
people who have talent but lack the resource to showcase that talent.
• It is still Beta.
Dhiraj Ninave

22. References
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 http://www.android.com
- Android Official Webpage
 http://code.google.com/android/
- Official Android Google Code Webpage
 http://www.openhandsetalliance.com/
- Open Handset Alliance Webpage
 http://www.androidwiki.com
– Android Wiki
 http://googleblog.blogspot.com/
- Official Google Blog
Questions ?
WWW.GOOGLE .COM
:p
Dhiraj Ninave