Crash (computing)
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In computing, a crash, or system crash, occurs when a computer program such as a software application or an operating system stops functioning properly and exits. On some operating systems or individual applications, a crash reporting service will report the crash and any details relating to it, usually to the developer(s) of the application. If the program is a critical part of the operating system, the entire system may crash or hang, often resulting in a kernel panic or fatal system error.
A kernel panic displayed on an iMac. This is the most common form of an operating system failure in Unix-like systems.
A display at Frankfurt Airport running a program under Windows XP that has crashed due to a memory read access violation
A kernel panic as displayed in OS X Mountain Lion
Operating system
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An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.
An IBM System 360/65 Operator's Panel. OS/360 was used on most IBM mainframe computers beginning in 1966, including computers used by the Apollo program.
The first server for the World Wide Web ran on NeXTSTEP, based on BSD.