题目内容

Data is one of the five components in an information system. Data is stored document file, worksheet file, database file and ( ).

A. application software
B. presentation file
C. communication device
D. system unit

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Hardware consists of many kinds of equipment, including( ).

A. keyboard
B. mouse
C. monitor
D. virus

Written ____ are guidelines or rules to follow when using software, hardware and data.

Software is another name for a ____.

There are two major kinds of the software----system software and ____.

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