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EMBEDDED OPERATING SYSTEM

EMBEDDED OPERATING SYSTEM. THE ANDROID AND SYMBIAN OS. SUBMITTED BY :- SATYADEEP MISHRA ROLL NO.:-10IT61B08. GETTING STARTED WITH E-OS WHAT IS ANDROID? PLATFORM ARCHITECTURE OF ANDROID APPLICATION BUILDING BLOCKS & DEVELOPMENT TOOLS WHY ANDROID? SUMMARY INTRODUCTION TO SYMBIAN OS

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EMBEDDED OPERATING SYSTEM

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  1. EMBEDDED OPERATING SYSTEM THE ANDROID AND SYMBIAN OS SUBMITTED BY:-SATYADEEP MISHRA ROLL NO.:-10IT61B08

  2. GETTING STARTED WITH E-OS WHAT IS ANDROID? PLATFORM ARCHITECTURE OF ANDROID APPLICATION BUILDING BLOCKS & DEVELOPMENT TOOLS WHY ANDROID? SUMMARY INTRODUCTION TO SYMBIAN OS ARCHITECTURE SECURITY ASPECTS COMPARISON BETWEEN SYMBIAN & ANDROID CONCLUSION CONTENT

  3. GETTING STARTED WITH EMBEDDED OPERATING SYSTEM • An embedded operating system is an operating system for embedded computer systems. • These operating systems are designed to be compact, efficient, and reliable. • E-OS are frequently also real-time operating systems, and the term RTOS is often used as a synonym for embedded operating system.

  4. CONT…. • An important difference between most embedded operating systems and desktop operating systems is that the application, including the operating system, is usually statically linked together into a single executable image. • Unlike a desktop operating system, the embedded operating system does not load and execute applications. This means that the system is only able to run a single application.

  5. SOME EXAMPLES ARE… • IOS (MAC OS) • Inferno (distributed OS originally from Bell Labs) • Pen Point OS • Palm OS from Palm, Inc. • Symbian OS • Windows CE, from Microsoft # Embedded Linux • Android • Open Zaurus • Metano GNU/Linux from Pynell - Embedded Systems.

  6. FEW REASONS TO GO MAD!!!! MOBILE APPLICATION DEVELOPMENT(MAD) • Smart Phones • Internet access anywhere • Social networking • Millions of mobile users • Open standards

  7. WHAT IS ANDROID? • Google's Android is an open-source platform that's currently available on a wide variety of smart phones. • Android is a software stack for mobile devices that includes an operating system, middleware and key applications. • The Android SDK provides the tools and APIs necessary to begin developing applications on the Android platform using the Java programming language. • Based on the Linux kernel

  8. HISTORY & OHA • Google Inc. purchased the initial developer of the software in 2005. from Android Inc. which was founded in Palo Alto, California, United States in October, 2003 by Andy Rubin, Rich Miner. • OHA Est. 5th Nov 2007, led by Google, open Source • Main Product Android Platform • Enthusiastic Support from Industry • Equipment makers • Network Operators • HTC was First to deliver ANDROID

  9. Open Handset Alliance(OHA)

  10. ANDROID ARCHITECTURE • Linux kernel • Libraries • Android run time • core libraries • Dalvik virtual machine • Application layer • Application protocol

  11. Colour - Good • Use a colour of font that contrasts sharply with the background • Ex: blue font on white background • Use colour to reinforce the logic of your structure • Ex: light blue title and dark blue text • Use colour to emphasize a point • But only use this occasionally

  12. Applications • Set of core applications including an email client, SMS program, calendar, maps, browser, contacts. • All applications are written using the Java programming language. • Built in and user apps. • Can replace built in apps.

  13. Application Framework • Access location information, run background services, set alarms, add notifications to the status bar, and much, much more. • Build an application, including lists, grids, text boxes, buttons, and even an embeddable web browser • Providing access to non-code resources such as localized strings, graphics, and layout files. • Activity manager – manages application life cycle.

  14. Android Runtime • Includes a set of core libraries of JAVA that provides most of the functionality • Runs in its own process, with its own instance of the Dalvik Virtual Machine • The Dalvik VM executes files in the Dalvik Executable (.dex)  • Compact and efficient than class files • Limited memory and battery power

  15. Dalvik Virtual Machine • All applications written in Java and converted to the Dalvik executable .dex. • Every android app runs its own process, with its own instance of the Dalvik virtual machine. • Not a traditional JVM, but a custom VM designed to run multiple instances efficiently on a single device. • VM uses Linux kernel to handle low-level functionality including security, threading, process and memory managemet.

  16. Linux Kernel • Acts as an abstraction layer between the hardware and the rest of the software stack. • Relies on Linux version 2.6 for core system services such as security, memory management, process management, network stack, and driver model. • Works as a HAL

  17. Libraries System C library - implementation of the C library (libc). Media Libraries - based on PacketVideo's Open CORE. Surface Manager - composites 2D and 3D graphic layers LibWebCore - a modern embeddable web view. SGL - the underlying 2D graphics engine. 3D libraries - based on OpenGL ES 1.0 APIs; the libraries use hardware 3D acceleration. FreeType - bitmap and vector font rendering SQLite - a powerful and lightweight relational database engine .

  18. Application Building Blocks BLOCKS • Activity- a single screen • Intent Receiver-to execute in reaction to an external event(Phone Ring) • Service-code that is long-lived and runs without a UI(Media Player) • Content Provider-an application's data to be shared with other applications

  19. Development Tools TOOLS Java Language • Eclipse IDE • ADT Plug-in For Eclipse • Android SDK Android Emulator Command line tools Documentations

  20. Application Lifecycle Application run in their own processes (VM, PID) Processes are started and stopped as needed to run an application's components Processes may be killed to reclaim resources

  21. Why Android ?! 1 – Open Source 2 – Flash Player Support 3 – Different Models 4 – Reasonable prices 5 – Google Apps 6 – Android Apps like (Astro file manager, Taskiller etc.)

  22. CASE STUDY :-HOW ANDOID IS BETTER?? • When Android Compared with iPhone (Apple) - Browsing - Desktop - Connectivity - PC Connection - Multi-notification - Market - Google Integration - Open Source - Open to carriers

  23. Android Software Updates • Android 1.1 • Android 1.5 – Cupcake • Android 1.6 – Donuts (CDMA) • Android 2.0 – Éclair • Android 2.2 – Froyo • Android 2.3 - Gingerbread • Android 3 - Honeycomb • API Levels used by apps to identify software version on the device • Android apps are generally forward compatible with newer version, but not necessarily backwards compatible

  24. SYMBIAN OS…(INTRODUCTION) Symbian OS is one of Nokia's mobile operating system for mobile devices and smartphones, with associated libraries, user interface, frameworks and reference implementations of common tools, originally developed by Symbian Ltd.

  25. HISTORY • Psion founded by David Potter inn 1980 launched the Psion Organizer, the world's first volume-produced handheld computer in 1984. • In June 1998 - Symbian is established as a private independent company and is owned by Ericsson, Nokia, Motorola and Psion. From this point onwards has EPOC OS been called Symbian OS. • In February 2004 - Symbian OS v8.0 is announced. • In February 2005 - Symbian OS v9 is announced. • In May 2006 - 100th commercial phone model ships.

  26. HISTORY Contd.. • In November 2006 - 100 million Symbian smartphones shipped. • In 2008, the former Symbian Software Limited was acquired by Nokia and a new independent non-profit organization called the Symbian Foundation was established. • The platform has been designated as the successor to Symbian OS, following the official launch of the Symbian Foundation in April 2009. • The Symbian Platform was officially made available as open source code in February 2010.

  27. CHARACTERISTICS.. • PROCESSING THREAD BASED • MEMORY MANAGEMENT • INPUT/OUTPUT KERNEL EXTENSION DEVICE DRIVERS DMA(DIRECT MEMORY ACCESS BLOCKING I/O STOAGE MEDIA

  28. MEMORY MANAGEMENT How Symbian OS Addresses Memory • Symbian OS is a 32-bit operating system, addresses can range up to 4 GB • Symbian OS divides memory into virtual pages and physical frames • Symbian OS adopts a two-level page table strategy

  29. MEMORY MANAGEMENT

  30. FEATURES • CLIENT SERVER ACHITECTURE • EVENT MANAGEMENT • OBJECT ORIENTED DESIGN • POWER MANAGEMENT • ROBUST AND DEPENDABLE • FULL AMLTI TASKING • AN OPEN OPERATING SYSTEM • MEMORY MANAGEMENT

  31. STRENGTHS AND WEAKNESS STRENGTH • MEMORY MANAGEMENT • EXECUTION IN ONE PLACE WEAKNESS • NO VITUAL MEMORY

  32. SYMBIAN ACHITECTURE • Symbian has a microkernel architecture, which means that the minimum necessary is within the kernel to maximise robustness, availability and responsiveness. • Symbian is designed to emphasise compatibility with other devices, especially removable media file systems. • There is also a large volume of User Interface (UI) Code. • Symbian includes a reference user-interface called "TechView". • It is very similar to the user interface from the Psion Series 5 personal organiser and is not used for any production phone user interface.

  33. MORE DETAILED ARCHITECTURE

  34. PLATFORM SECURITY Trust • Access to private data Security • Cost control • Compromise important telephone functionality Protection • Software ownership • DRM

  35. PLATFORM SECURITY

  36. Example of Applications where the Symbian OS is being used • Nokia Series 80 interface • UIQ interface(Used for PDAs such as Sony Ericsson P800 ) • Nokia S60 interface

  37. DEVELOPING SYMBIAN OS • As of 2010, the SDK for Symbian is standard C++, using Qt. It can be used with either Qt creator, or Carbide (the older IDE previously used for Symbian development). • A phone simulator allows testing of Qt apps. • It is also possible to develop using Symbian C++, although it is not a standard implementation. • Prior to the release of the Qt SDK, this was the standard development environment.

  38. ADVANTAGES • Greater range of applications. • High quality games. • Better inbuilt wap browser. • Connectivity is lot more easier and faster. • Real Player, Smart movie player etc. sort of application are not available with java phones. • You can install software and applications of any type • You can download big files through your phone easily with 3G around.

  39. DISADVANTAGE • The OS is not available for PCs . • The Symbian OS can be easily affected by a Virus.

  40. COMPARSION OF SYMBIAN & ANDROID • OPERATING SOFTWARE or FIRMWARE • FLASHING Your phone with new FIRMWARE • CHANGING PHONE FEATURES • PROCESSOR and its SPEED • MODIFICATIONS

  41. CONCLUSION In the small and rapidly growing world the need of mobiles and its applications are obvious. To meet the users embedded OS are playing the vital. To speak in a sentence about Android and Symbian, Android is much advanced and provides more value to the end users. Symbian needs updates its features.

  42. REFERENCE [1]http://www.android.com [2] http://developer.android.com/ [3] http://www.androidwiki.com [4] www.symbian.com [5] www.symbian.com/technology/symbos-phones.html

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