Android Technology

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Android is an operating system for mobile devices such as smart phones and tablet computers. It is developed by the Open Handset Alliance led by Google. Android, Inc. was founded in Palo Alto, California, United States in October, 2003 by Andy Rubin, Rich Miner, Nick Sears, and Chris White to develop, in Rubin\'s words "...smarter mobile devices that are more aware of its owner\'s location and preferences".

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  • Android Technology

    1. 1. Presented Bysai butchi babu manepalli
    2. 2. INDEX Introduction Android OS Android - What Is it? Android Features Design & Architecture Network Connectivity Security & Privacy Challenges Uses Overall Evaluation Future Enhancements & Conclusion sai butchi babu manepalli
    3. 3. INTRODUCTION Android is an operating system for mobile devices such as smartphones and tablet computers. It is developed by the Open Handset Alliance led by Google. Android, Inc. was founded in Palo Alto, California, United States in October, 2003 by Andy Rubin, Rich Miner, Nick Sears, and Chris White to develop, in Rubins words "...smarter mobile devices that are more aware of its owners location and preferences". sai butchi babu manepalli
    4. 4. Android OS Fastest growing mobile OS Over 300,000 Android activations a day Android overtook OS as the dominant OS in US during 2H 2010 First phone launched HTC G1 in 2008 Currently an OS of choice for Motorola, HTC, Samsung, Sony Ericsson, among others Software updates every few months sai butchi babu manepalli
    5. 5. Android-What is it ?software stack for mobile devices – incl. OS, middleware and key applicationsapplication framework enabling reuse/replacement of appsintegrated browser based on webkitOptimized graphics – 2D graphics library, 3D based on OPEN GL ES Preinstalled applications from Google (GMS) sai butchi babu manepalli
    6. 6. Android Features•   – Application Framework – Dalvik virtual machine – Integrated (webkit) browser – 2D and 3D graphics APIs with HW – SQLite – Video and audio codecs – Bluetooth, EDGE, 3G, and Wi-Fi – Camera, GPS, compass, and accelerometer sai butchi babu manepalli
    7. 7. Design & Architecture Androids kernel is derived from the Linux kernel. Google contributed code to the Linux kernel as part of their Android effort, but certain features, notably a power management feature called wakelocks, were rejected by mainline kernel developers, so the Android kernel is now a separate version or fork of the Linux kernel. Android does not have a native X Window System nor does it support the full set of standard GNU libraries, and this makes it difficult to port existing GNU/Linux applications or libraries to Android. sai butchi babu manepalli
    8. 8. Android uses Linux for its device drivers, memory management, process management, and networking.The next level up contains the Android native libraries. They are all written in C/C++ internally, but you’ll be calling them through Java interfaces. In this layer you can find the Surface Manager, 2D and 3D graphics, Media codecs, the SQL database (SQLite), and a native web browser engine (WebKit). sai butchi babu manepalli
    9. 9. Architecture sai butchi babu manepalli
    10. 10. Network connectivityIt supports wireless communications using:  GSM mobile-phone technology  3G  Edge  Wi-Fi networks sai butchi babu manepalli
    11. 11. Security & Privacy Android is a multi-process system, in which each application (and parts of the system) runs in its own process. Most security between applications and the system is enforced at the process level through standard Linux facilities, such as user and group IDs that are assigned to applications. Android smart phones have the ability to report the location of Wi-Fi access points it encounters as phone users move around to build vast databases containing physical locations of hundreds of millions of such access points. These databases form electronic maps to locate smart phones, allowing them to run apps like Foursquare and companies like Google to deliver location-based ads. sai butchi babu manepalli
    12. 12. Challenges CPU typically runs 500-600 MHz RAM available to an App may only be a few megabytes Disk (flash) access is very slow Lifecycle - apps must pause/quit often, and restore to give the illusion that they are always running Network access may be slow and (very) intermittent sai butchi babu manepalli
    13. 13. USES The Android operating system is used on smartphones, net books, tablet computers, Google TV, and other devices. The main hardware platform for Android is the ARM architecture. There is support for x86 from the Android-x86 project, and Google TV uses a special x86 version of Android. The first commercially available phone to run Android was the HTC Dream, released on 22 October 2008. In early 2010 Google collaborated with HTC to launch its flagship Android device, the Nexus One. This was followed later in 2010 with the Samsung-made Nexus S.. sai butchi babu manepalli
    14. 14. Overall EvaluationLimitations  Bluetooth limitations  Android doesnt support:  Bluetooth stereo  Contacts exchange  Modem pairing  Wireless keyboards But itll work with Bluetooth headsets, but thats about it Firefox Mobile isnt coming to Android Apps in Android Market need to be programmed with a custom form of Java → Mozilla and the Fennec wont have that• sai butchi babu manepalli
    15. 15. Future Enhancements & Conclusion  Google Android Sales to Overtake iPhone in 2012  The OHA is committed to make their vision a reality: to deploy the Android platform for every mobile operator, handset manufacturers and developers to build innovative devices  Intel doesn’t want to lose ownership of the netbook market, so they need to prepare for anything, including Android  More Android devices are coming and some will push the envelope even further We can only hope that the next versions of Android have overcome the actual limitations and that the future possibilities became a reality . • sai butchi babu manepalli
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