Introduction +to Symbian^3

Overview

The +Symbian platform includes a customizable user interface, a rich set of applications, +common user interface components (AVKON, UIKON) and development tools for +implementing new applications. It also includes tools and documentation that +enables device creators and application developers to create feature-rich +devices and applications.

The Symbian platform architecture is divided +into different layers:

The Applications Layer consists of application specific UI and +engine components. It uses the services provided by Middleware and OS layers.
The Middleware Layer consists of domains which provide services +to the application layer; for example, Multimedia, Networking and Location +services.
The Operating System (OS) Layer provides all higher-level +OS services across a full range of technology domains such as communications, +networking, graphics, multimedia and so on. It also includes low-level OS +services such as frameworks, libraries and utilities, which turn the abstracted +hardware and OS mechanisms into a programmable interface.
The Adaptation layer integrates the generic platform software +with the phone’s cellular platform. It is implemented by the device creators +though reference implementations are provided with the platform.
Give link to the adaptation documentation.
The Cellular Platform is the device-specific hardware and cellular +software that performs the services required by the Symbian platform.

For more information about layers of the Symbian platform and the +packages contained within it, see the Package view of the current Symbian Foundation platform.

+Architecture of the Symbian platform + +

A layer can have packages from any technology +domain. Technology domains are a group of packages, each of which is +a collection of components. To understand more about the architecture, what +the platform offers, see Introduction +to Symbian Developer Community.