Symbian is a mobile operating system originally designed for smartphones. It was formed in 1998 when Psion contributed its EPOC operating system. Symbian has undergone many updates over its versions (6.0 to 10.1) to incorporate new voice, data and telephony technologies. It has features such as a user interface, browser, messaging, multimedia and supports application development. Symbian uses a microkernel architecture and includes services for communications, device services, generic OS services and more. It provides memory management and platform security for applications.

1. PRESENTED BY
BACHUWAR SAIKRISHNA

2. Introduction
History
Versions
Features
Architecture
conclusion
CONTENTS

3. Symbian is a mobile operating system (OS) and
computing platform designed for Smartphone's and
currently maintained by Accenture.
INTRODUCTION

4.  Symbian was formed in 1998, Psion contributed
EPOC into the group.
 EPOC was renamed Symbian OS and has been
progressively updated, incorporating both voice
and data telephony technologies of ever greater
sophistication with every product release.
HISTORY

5.  Symbian OS 6.0 and 6.1
 Symbian OS 7.0 and 7.0s (including MMF)
 Symbian OS 8.0 and 8.1
 Symbian OS 9.0, 9.1, 9.2, 9.3, 9.4
 Symbian^2
 Symbian^3 (Symbian OS 9.5) and Symbian Anna
 Nokia Belle (Symbian OS 10.1)
VERSIONS

6.  User interface
 Browser
 Multiple language support
 Application development
 Messaging
 Multimedia
 Communication protocols
 Mobile telephony
FEATURES

7. ARCHITECTURE

8.  The Symbian kernel (EKA2) supports sufficiently fast real-
time response.
 The real-time kernel has a microkernel architecture
containing only the minimum, most basic primitives and
functionality, for maximum robustness, availability and
responsiveness
KERNEL AND HARDWARE
INTEGRATION

9.  Includes the File Server and User Library
 A Plug-In Framework which manages all plug-ins, Store,
Central Repository, DBMS and cryptographic service
 It also includes the Text Window Server and the Text
BASE SERVICES

10.  Cellular Baseband Services
 Communications Framework
 Device Services
 Generic OS Services
OS SERVICES

11.  Messaging
 Browsing
 Data synchronization
 Java ME providing another set of APIs on top of most
of the OS and multimedia
APPLICATION SERVICES

12.  S60, UIQ and MOAP — were contributed to Symbian
in 2009.
 Symbian also contains graphics, text layout and font
rendering libraries.
USER INTERFACE
SERVICES

13.  Stack and Heap
 Leaves
 Cleanup Stack
 Two Phase Construction
 Memory Leaks
MEMORY MANAGEMENT

14.  Symbian 9.1 introduced capabilities and a Platform
Security framework. To access certain APIs,
developers have to sign their application with a digital
signature.
 The Symbian platform attempts to ensure the integrity
of data even in the presence of unreliable
communication and a shortage of resources, such as
memory, power, and storage.
PLATFORM SECURITY

15. DEVICE SECURITY

16.  Device protection: Protection of the Symbian platform-based
device against a physical attack is controlled by the device
lock feature, which is not necessarily often used.
 Device Authentication: When powering on the device, the
user is authenticated in the operating system level with
standard device authentication methods, such as a PIN
code and security code requests.
DEVICE SECURITY..(CONT)

17.  Robust and Multitasking
 Natively IP-based, with fully integrated communications
and messaging.
 Enables a large community of developers
 The open platform allows the installation of third party
software to further enhance the platform.
CONCLUSION