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Children's Day - Wikipedia
WEB1 day ago · The officially recognized date of Children's Day varies from country to country. Children's Day in Donetsk, Ukraine, 2011 Children's Day is celebrated on 1 June in former Soviet Union states (including Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, …
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Operating system - Wikipedia
WEB1 day ago · e. An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, …
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