题目内容
Linux is a popular and powerful alternative to the Windows operating system.
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When a single physical computer runs a special program known as virtualization software, it operates as though it were two or more separate and independent computers, known as virtual machines.
Google's Chrome OS integrates with web servers using cloud computing and storage to run applications and to perform other functions.
Based on the MAC OS, Android is designed for Apple's iPhone, iPod Touch, and iPad.
Programs such as word processors and spreadsheets are known as utilities.
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