Operating System (OS)
The category of operating system that you most likely have running on your PDA computer is a ....... Operating system

Real time
Single user, multitask
Single user, single task
Multiuser, multitask

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Operating System (OS)
All of the following are task performed by the operating system except

Provides an interface for user to interact with computer
Managing hardware on the computer
Controlling the access that application program has to the CPU
Performing housekeeping task like file compression and disk defragmentation

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