Content deleted Content added
Guy Harris (talk | contribs) That citation doesn't define general-purpose OSes, it defines special-purpose OSes. It just mentions the term "general-purpose operating systems" in passing. Pull the reference from operating system, whence much of this text was taken; the version there is cleaner. |
Guy Harris (talk | contribs) →Overview: Pull over the better version of the other reference from operating system as well. |
||
Line 10:
For hardware functions such as [[input and output]] and [[memory allocation]], the operating system acts as an intermediary between programs and the computer hardware,<ref>{{cite book | last = Stallings | title = Operating Systems, Internals and Design Principles | publisher = Prentice Hall | year = 2005 | ___location = Pearson |page=6}}</ref><ref>{{cite book | last = Dhotre| first = I.A.| title = Operating Systems. | publisher = Technical Publications | year = 2009 |page=1}}</ref> although the application code is usually executed directly by the hardware and frequently makes [[system call]]s to an OS function or is [[interrupt]]ed by it. Operating systems are found on many devices that contain a computer{{snd}} from cellular phones and video game consoles to [[web server]]s and [[supercomputer]]s.
The dominant general-purpose desktop operating system is [[Microsoft Windows]] with a market share of around 76.45%. [[macOS]] by [[Apple Inc.]] is in second place (17.72%), and the varieties of [[Linux]] are collectively in third place (1.73%).<ref>{{Cite web|title=Desktop Operating System Market Share Worldwide|url=https://gs.statcounter.com/os-market-share/desktop/worldwide/|access-date=31 October 2020|website=StatCounter Global Stats|language=en}}</ref> In the [[Mobile operating system|mobile]] sector (including smartphones and [[Tablet computer|tablets]]), [[Android (operating system)|Android's]] share is up to 72% in the year 2020.<ref>{{Cite web|title=Mobile & Tablet Operating System Market Share Worldwide|url=https://gs.statcounter.com/os-market-share/mobile-tablet/worldwide/|access-date=31 October 2020|website=StatCounter Global Stats|language=en}}</ref> According to third quarter 2016 data, Android's share on smartphones is dominant with 87.5 percent with also a growth rate of 10.3 percent per year, followed by Apple's [[iOS]] with 12.1 percent with per year decrease in market share of 5.2 percent, while other operating systems amount to just 0.3 percent.<ref>{{cite web |url=http://www.businesswire.com/news/home/20161102006440/en/Strategy-Analytics-Android-Captures-Record-88-Percent |title=Strategy Analytics: Android Captures Record 88 Percent Share of Global Smartphone Shipments in Q3 2016 |date=2 November 2016 |url-status=live |archive-url=https://web.archive.org/web/20161105223332/http://www.businesswire.com/news/home/20161102006440/en/Strategy-Analytics-Android-Captures-Record-88-Percent |archive-date=5 November 2016 }}</ref> [[Linux distribution]]s are dominant in the server and supercomputing sectors. Other specialized classes of operating systems (special-purpose operating systems)<ref name="auto">{{Cite web|url=https://www.oreilly.com/library/view/operating-system-concepts/9780471694663/pt07.html|title=VII. Special-Purpose Systems - Operating System Concepts, Seventh Edition [Book]|website=www.oreilly.com}}</ref><ref>
Some operating systems require installation or may come pre-installed with purchased computers ([[OEM]]-installation), whereas others may run directly from media (i.e. [[live cd]]) or flash memory (i.e. usb stick).
| |||