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B1 - Intermediate (English) | English For Life
B1 - Intermediate (English)

Niveli mesatarë i gjuhës angleze B1

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Ashimarifi posted Dec 2 '16 at 8:06 pm


An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. All computer programs, excluding firmware, require an operating system to function.


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