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Versiones de Android Os

android-os-comparison-guide-infographic-630w-1

Versiones de Mac(Os)

Versión	Nombre en código	Anuncio	Presentación	Versión más reciente
Mac OS X Server 1.0	Hera		16 de marzo de 1999	1.2v3 (27 de octubre de 2000)
Beta pública	Kodiak		13 de septiembre de 2000
10.0	Cheetah		24 de marzo de 2001	10.0.4 (22 de junio de 2001)
10.1	Puma	18 de julio de 2001⁶¹	25 de septiembre de 2001	10.1.5 (6 de junio de 2002)
10.2	Jaguar	6 de mayo de 2002⁶²	24 de agosto de 2002	10.2.8 (3 de octubre de 2003)
10.3	Panther	23 de junio de 2003⁶³	24 de octubre de 2003	10.3.9 (15 de abril de 2005)
10.4	Tiger	4 de mayo de 2004⁶⁴	29 de abril de 2005	10.4.11 (14 de noviembre de 2007)
10.5	Leopard	26 de junio de 2006⁶⁵	26 de octubre de 2007	10.5.8 (5 de agosto de 2009)
10.6	Snow Leopard	9 de junio de 2008⁶⁶	28 de agosto de 2009	10.6.8 (23 de junio de 2011)
10.7	Lion	20 de octubre de 2010⁶⁷	20 de julio del 2011	10.7.3 (1 de febrero del 2012)
10.8	Mountain Lion	16 de febrero de 2012⁶⁸	Verano 2012	10.8 Developer Preview 1 (DP1)

las versiones mas populares de linux

UBUNTU,FEDORA,OPENSUSE,MINT,DEBIAN,MANDRIVA,

PCLINUXOS,PUPPY LINUX,SABAYON LINUX,CENTOS

Versiones de windows

Windows 1.0 y Windows 2.0.

Windows 3.0 y 3.1

Windows 3.x.

Windows 3.0 (1990)

Windows 95, 98, y Me

Windows 95, Windows 98 y Windows Me.

An operating system (OS) is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is a vital component of the system software in a computer system. Application programs require an operating system which are usually separate programs, but can be combined in simple systems.

Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting for cost allocation of processor time, mass storage, printing, and other resources.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between application programs and the computer hardware,[1][2] although the application code is usually executed directly by the hardware and will frequently make a system call to an OS function or be interrupted by it. Operating systems are found on almost any device that contains a computer—from cellular phones and video game consoles to supercomputers and web servers.