MOBILE OPERATING SYSTEM 1)Introduction
WWW.VIDYARTHIPLUS.COM MOBILE OPERATING SYSTEM 1)Introduction The Symbian OS it is the operating system developed and sold by Symbian Ltd. The OSis used primarily by Nokia with its S60 user interface and by Sony Ericsson with its UIQ user interface, but the Symbian OS is also used by a number of Japanese mobile phone manufacturers for handsets sold inside of Japan. RIM blackberry BlackBerry OS is a proprietary mobile operating system developed by BlackBerry Ltd for its BlackBerry line of smartphone handheld devices. The operating system provides multitasking and supports specialized input devices that have been adopted by WWW.VIDYARTHIPLUS.COM V+ TEAM WWW.VIDYARTHIPLUS.COM BlackBerry Ltd. for use in its handhelds, particularly the trackwheel, trackball, and most recently, the trackpad and touchscreen Android Android is a mobile operating system (OS) currently developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets. Android's user interface is mainly based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input. In addition to touchscreen devices, Google has further developed Android TV for televisions, Android Auto for cars, and Android Wear for wrist watches, each with a specialized user interface. Variants of Android are also used on notebooks, game consoles, digital cameras, and other electronics. 2)microkernel design in mobile os : microkernel assigns only a small number of essential processes to the kernel such as address space management ,inter process communication and scheduling and provides all other services in separate processes called servers.
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