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

None of these
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
hands over control of address bus and data bus to the interrupting device

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Operating System (OS)
A Processor

is the device where information is stored
is typically characterized by interactive processing and time of the CPU
None of these
is a device that performs a sequence of operations specified by instructions in memory.
is a sequence of instructions

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