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iphone3
Mac OS X is a line of partially proprietary graphical operating systems developed, marketed, and sold by Apple Inc., the latest of which is pre-loaded on all currently shipping Macintosh computers. Mac OS X is the successor to the original Mac OS, which had been Apple's primary operating system since 1984. Unlike its predecessor, Mac OS X is a UNIX operating system built on technology that had been developed at NeXT through the second half of the 1980s and up until Apple purchased the company in early 1997.
The operating system was first released in 1999 as Mac OS X Server 1.0, with a desktop-oriented version (Mac OS X v10.0) following in March 2001. Since then, six more distinct "client" and "server" editions of Mac OS X have been released, the most recent being Mac OS X v10.6, which was first made available on August 28, 2009. Releases of Mac OS X are named after big cats; the current version of Mac OS X is "Snow Leopard".The server edition, Mac OS X Server, is architecturally identical to its desktop counterpart but usually runs on Apple's line of Macintosh server hardware. Mac OS X Server includes work group management and administration software tools that provide simplified access to key network services, including a mail transfer agent, a Samba server, an LDAP server, a domain name server, and others. In the upcoming release of Mac OS X v10.7 Lion, all server aspects of Mac OS X Server will be integrated into the client version.[10]
[edit] Microsoft Windows
Windows 7, shown here, is the newest release of Windows.
Main article: Microsoft WindowsMicrosoft Windows is a family of proprietary operating systems primarily targeted to Intel architecture based computers, with an estimated 88.9 percent total usage share.[11][12][13][6] Currently, the most widely used version of the Windows family is Windows XP,[14] released on October 25, 2001. The newest version is Windows 7 for workstations and Windows Server 2008 R2 for servers.
Microsoft Windows originated in 1985 as an application running on top of MS-DOS, which was the standard operating system shipped on most Intel architecture personal computers at the time. In 1995, Windows 95 was released, combining the graphical user interface (GUI) with the core operating system, thus eliminating the need to first load and start MS-DOS. Beginning with Windows 2000, the operating system has been based on the Windows NT kernel. Current versions of Windows run on IA-32 and x86-64 microprocessors, although Windows 8 will support ARM architecture. In the past, Windows NT supported a few non-Intel architectures.Server editions of Windows are widely used. In recent years, Microsoft has expended significant capital in an effort to promote the use of Windows as a server operating environment. However, Windows' usage on servers is not as widespread as on personal computers, as Windows competes against Linux and BSD for market share. Other Older operating systems which are still used in niche markets include OS/2 from IBM and Microsoft; Mac OS, the non-Unix precursor to Apple's Mac OS X; BeOS; XTS-300. Some, most notably Haiku, RISC OS, MorphOS, AmigaOS 4 and FreeMint continue to be developed as minority platforms for enthusiast communities and specialist applications. OpenVMS formerly from DEC, is still under active development by Hewlett-Packard. Yet other operating systems are used almost exclusively in academia, for operating systems education or to do research on operating system concepts. A typical example of a system that fulfills both roles is MINIX, while for example Singularity is used purely for research.Chrome is an operating system based on the Linux kernel and designed by Google. Chrome targets computer users who spend most of their time on the Internet, it is technically only a web browser with no other applications and relies on Internet applications used in the web browser to accomplish tasks such as word processing and media viewing.
The operating system was first released in 1999 as Mac OS X Server 1.0, with a desktop-oriented version (Mac OS X v10.0) following in March 2001. Since then, six more distinct "client" and "server" editions of Mac OS X have been released, the most recent being Mac OS X v10.6, which was first made available on August 28, 2009. Releases of Mac OS X are named after big cats; the current version of Mac OS X is "Snow Leopard".The server edition, Mac OS X Server, is architecturally identical to its desktop counterpart but usually runs on Apple's line of Macintosh server hardware. Mac OS X Server includes work group management and administration software tools that provide simplified access to key network services, including a mail transfer agent, a Samba server, an LDAP server, a domain name server, and others. In the upcoming release of Mac OS X v10.7 Lion, all server aspects of Mac OS X Server will be integrated into the client version.[10]
[edit] Microsoft Windows
Windows 7, shown here, is the newest release of Windows.
Main article: Microsoft WindowsMicrosoft Windows is a family of proprietary operating systems primarily targeted to Intel architecture based computers, with an estimated 88.9 percent total usage share.[11][12][13][6] Currently, the most widely used version of the Windows family is Windows XP,[14] released on October 25, 2001. The newest version is Windows 7 for workstations and Windows Server 2008 R2 for servers.
Microsoft Windows originated in 1985 as an application running on top of MS-DOS, which was the standard operating system shipped on most Intel architecture personal computers at the time. In 1995, Windows 95 was released, combining the graphical user interface (GUI) with the core operating system, thus eliminating the need to first load and start MS-DOS. Beginning with Windows 2000, the operating system has been based on the Windows NT kernel. Current versions of Windows run on IA-32 and x86-64 microprocessors, although Windows 8 will support ARM architecture. In the past, Windows NT supported a few non-Intel architectures.Server editions of Windows are widely used. In recent years, Microsoft has expended significant capital in an effort to promote the use of Windows as a server operating environment. However, Windows' usage on servers is not as widespread as on personal computers, as Windows competes against Linux and BSD for market share. Other Older operating systems which are still used in niche markets include OS/2 from IBM and Microsoft; Mac OS, the non-Unix precursor to Apple's Mac OS X; BeOS; XTS-300. Some, most notably Haiku, RISC OS, MorphOS, AmigaOS 4 and FreeMint continue to be developed as minority platforms for enthusiast communities and specialist applications. OpenVMS formerly from DEC, is still under active development by Hewlett-Packard. Yet other operating systems are used almost exclusively in academia, for operating systems education or to do research on operating system concepts. A typical example of a system that fulfills both roles is MINIX, while for example Singularity is used purely for research.Chrome is an operating system based on the Linux kernel and designed by Google. Chrome targets computer users who spend most of their time on the Internet, it is technically only a web browser with no other applications and relies on Internet applications used in the web browser to accomplish tasks such as word processing and media viewing.
