ANDROID OPERATING

SYSTEMPresented by:

Raziel B. Lucagbo, ACT-1

Android is an operating system for mobile devices

Smart phone high-end mobile phone built on a mobile

computing platform  were devices that mainly combined the

functions of a personal digital assistant (PDA) and a mobile phone or camera phone

Combine the functions of portable media players, low-end compact digital cameras, pocket video cameras, and GPS navigation units. 

WHAT IS ANDROID

tablet computers is a complete mobile computer, larger than a mobile phone

or personal digital assistant, integrated into a flat touch screen and primarily operated by touching the screen

often uses an onscreen virtual keyboard, a passive stylus pen, or a digital pen

Android is the first free, open source, and fully customizable mobile platform.

It is a mobile operating system which is becoming a major competitor to iPhone OS in terms of openness.

It delivers a complete set of software for mobile devices: an operating system, middleware and key mobile applications.

Provides basic operating system services, message passing, and inter-process communication on the device

Provides the tools and APIs necessary to begin developing applications on the Android platform using the Java programming language

Android is built on the open Linux Kernel. Utilizes a custom virtual machine that was designed to optimize

memory and hardware resources in a mobile environment Android provides an open platform to developers for

creating their own applications.

Android was built from the ground-up to enable developers to create compelling mobile applications that take full advantage of all a handset has to offer

It has a large community of developers writing applications ("apps") that extend the functionality of the devices

It uses the Dalvik virtual machine with just-in-time compilation to run Dalvik dex-code , which is usually translated from Java bytecode

Android, Inc. was founded in Palo Alto, California, United States in October, 2003

Andy Rubin (co-founder of Danger) Rich Miner(co-founder of Wildfire Communications, Inc.) Nick Sears (once VP at T-Mobile)  Chris White (headed design and interface development at WebTV)

Android was initially developed by Android Inc. Later acquired by Google to form Open Headset Alliance [ a group of 65 hardware, software, and telecom companies ]. 

ANDROID, THE WORLD'S MOST POPULAR MOBILE PLATFORM

It powers millions of phones, tablets, and other devices It brings the power of Google and the web into your hands.It has amazingly fast browser, cloud sync, multi-tasking, easy ways to connect & share and the latest Google and thousands of other apps available on Android MarketCan run various applications.

THE FIRST PHONE WITH ANDROID OPERATING SYSTEM

Marketed as the T-Mobile G1 in the US and parts of Europe & Era G1 in Poland

Internet-enabled smartphone  With an operating system

designed by Google and hardware by HTC

Was released October 22, 2008 (United States) October 30, 2008 (United Kingdom) February 5, 2009 (Australia) February 21, 2009 (Singapore) June 2, 2009 (Canada)

HTC G1 /HTC Dream 

February 2009 in Germany with a QWERTZ keyboard  March 2009 in France in withan AZERTY keyboard

Android v1.5-cupcake Based on Linux Kernel 2.6.27

Android v1.6-donut ,Based on Linux Kernel 2.6.29

Android v2.0-ecliar,Based on Linux Kernel 2.6.29

Android-2.2-Froyo,Based on Linux Kernel 2.6.32

Android gingerbread, Based on Linux Kernel 2.6.33

ANDROID VERSIONS

Android v 3.0 Honeycomb, Designed especially for Tablet PC’s

is dedicated  for tablet PCs hence the design change primarily focuses in tablet optimization with updated UI.

It is a next version of the Android platform, designed from the ground up for devices with larger screen sizes, particularly tablets

Ice cream SandwichThe next version composing of both

gingerbread and honeycomb into unified OS

Devices that have been released with Google's Android operating system installed.

Acer HTC LG Motorola Samsung Sony Ericsson Alcatel Cherry mobile Other manufacturers

1. Starting with version 1.0. Android can run multiple apps at the same time.

2. Android OS is completely open source, developers can use the core OS functions to develop applications

3. Keeps information visible on your home screen4. Has a better app market5. Gives you better notifications 5. Lets you choose your hardware6. Lets you choose your carrier7. Lets you install custom ROMs8. Lets you change your settings faster9. Does Google and Social Integration10. Gives you more options to fit your budget.

Advantages Of Android OS

Disadvantages of Android OS Chaos Ecological System

◦ Android OS is an "open source" it could significantly increase the risk of hacking and it would lead to serious security measures of locking the devices, which would be a sham.

◦ Rejection of Google android by carriers who charge a fee for some of the web based application which Google android will enable mobile phone holders to access free of charge.

One drawback of the phones that use this system is the need for internet connection continually. In this case, users should be prepared to subscribe to GPRS packet as needed. In addition, by using this operating system, users will get ads that are displayed when using the application.

FEATURES:Application framework enabling reuse and replacement of componentsDalvik virtual machine optimized for mobile devicesIntegrated browser based on the open source Web Kit engineOptimized graphics powered by a custom 2D graphics library; 3D graphics based on the OpenGL ES 1.0 specification (hardware acceleration optional)SQ Lite for structured data storageMedia support for common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF) GSM Telephony (hardware dependent)Bluetooth, EDGE, 3G, and WiFi (hardware dependent)Camera, GPS, compass, and accelerometer (hardware dependent)Rich development environment including a device emulator, tools for debugging, memory and performance profiling, and a plugin for the Eclipse IDE

Android includes a set of C/C++ libraries used by various components of the Android system. These capabilities are exposed to developers through the Android application framework.

System C library - a BSD-derived implementation of the standard C system library (libc), tuned for embedded Linux-based devices

Media Libraries - based on Packet Video's Open CORE; the libraries support playback and recording of many popular audio

and video formats static image files, including MPEG4, H.264, MP3, AAC, AMR, JPG,

and PNG Surface Manager - manages access to the display subsystem and

seamlessly composites 2D and 3D graphic layers from multiple applications

LIBRARIES:

Lib WebCore - a modern web browser engine which powers both the Android browser and an embeddable web view

SGL - the underlying 2D graphics engine 3D libraries - an implementation based on OpenGL ES 1.0

APIs; the libraries use either hardware 3D acceleration (where available) or the included, highly optimized 3D software pasteurizer

Free Type - bitmap and vector font rendering SQ Lite - a powerful and lightweight relational database

engine available to all applications