Computer Basic Information
The function of CPU is

to provide external storage of text
to communicate with the operator
None of these
to provide a hard copy
to read, interpret and process the information and instruction

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Computer Basic Information
An essential difference between the operating system that runs a typical desktop computer and the operating system that runs a typical PDA is that .......

the desktop OS has a graphical user interface whereas the PDA OS does not.
the desktop computer has an OS whereas a PDA does not.
the desktop OS can run several programs simultaneously whereas the PDA OS cannot.
None of these
the desktop OS manages hardware resources whereas the PDA OS does not.

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