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

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

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine immediately
halts for a predetermined time
branches off to the interrupt service routine after completion of the current instruction
None of these

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