Symbian OS

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{system, computer, user}
{math, number, function}
{company, market, business}
{work, book, publish}
{war, force, army}
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ARM, x86

Symbian is an open source operating system (OS) and software platform designed for smartphones and maintained by Nokia. The Symbian platform is the successor to Symbian OS and Nokia Series 60; unlike Symbian OS, which required an additional user interface system, Symbian includes a user interface component based on S60 5th Edition. The latest version, Symbian^3, was officially released in Q4 2010, first used in the Nokia N8.

Symbian OS was originally developed by Symbian Ltd.[3] It is a descendant of Psion's EPOC and runs exclusively on ARM processors, although an unreleased x86 port existed.

Devices based on Symbian accounted for 43.5% of worldwide smartphone sales in 2010 Q2[4]. Some estimates indicate that the cumulative number of mobile devices shipped with the Symbian OS up to the end of Q2 2010 is 385 million[5].

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