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'''Windows''' is a series of [[operating system]]s produced and maintained by the [[Microsoft Corporation]]. It was estimated that as of December 2007<ref>[http://www.w3schools.com/browsers/browsers_os.asp OS Statistics]. Refsnes Data. Retrieved 29 January 2008.</ref> Microsoft Windows accounted for nearly 90% of [[Operating system|operating system]] usage, with 3 out of 4 being [[Windows XP]]. Windows is used for desktop, and [[server]] computers,<ref>[https://www.microsoft.com/windowsserver2003/default.mspx Windows Server 2003 R2 Home]. Microsoft Corporation. Retrieved 29 January 2008.</ref> and more recently also for [[cellular phone]]s and tablet computers. It is intended for use with the [[Intel]] x86-64 family of processors.

'''Windows''' is a series of [[operating system]]s produced and maintained by the [[Microsoft Corporation]]. It was estimated that as of December 2007<ref>[http://www.w3schools.com/browsers/browsers_os.asp OS Statistics]. Refsnes Data. Retrieved 29 January 2008.</ref> Microsoft Windows accounted for nearly 90% of [[Operating system|operating system]] usage, with 3 out of 4 being [[Windows XP]]. Windows is used for desktop, and [[server]] computers,<ref>[https://www.microsoft.com/windowsserver2003/default.mspx Windows Server 2003 R2 Home]. Microsoft Corporation. Retrieved 29 January 2008.</ref> and more recently also for [[cellular phone]]s and tablet computers. It is intended for use with the [[Intel]] x86-64 family of processors.

Early versions of Windows (98 and earlier) were notoriously unreliable, despite (or maybe because of?) Microsoft's near-monopoly share of the operating system market. They crashed so often that the term "blue screen of death" entered the vocabulary.

Early versions of Windows (98 and earlier) were notoriously unreliable, despite (or maybe because of?) Microsoft's near-monopoly share of the desktop operating system market. They crashed so often that the term "blue screen of death" entered the vocabulary.

Initially Windows was a text-based system (MS-DOS).  Then a [[Graphical User Interface]] extension was added onto this MS-DOS core<ref>[https://www.microsoft.com/windows/WinHistoryProGraphic.mspx Windows History: Windows Desktop Timeline]. Microsoft Corporation. Retrieved 29 January 2008.</ref> It became a full GUI operating system free of the MS-DOS core beginning with the release of Windows NT.

Initially Windows was a text-based system (MS-DOS).  Then a [[Graphical User Interface]] extension was added onto this MS-DOS core<ref>[https://www.microsoft.com/windows/WinHistoryProGraphic.mspx Windows History: Windows Desktop Timeline]. Microsoft Corporation. Retrieved 29 January 2008.</ref> It became a full GUI operating system free of the MS-DOS core beginning with the release of Windows NT.