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

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Computer Basic Information
In comparison with static RAM memory, the dynamic RAM memory has

None of these
lower bit density and lower power consumption
higher bit density and higher power consumption
lower bit density and higher power consumption
higher bit density and lower power consumption

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