Microprocessor
A microprocessor is ALU

 and memory on a single chip.
 and control unit on a single chip.
 register unit and I/O device on a single chip.
 register unit and control unit on a single chip.

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Microprocessor
In a vector interrupt

 none.
 the branch address is obtained from a register in the processor.
 the branch address is assigned to a fixed location in memory.
 the interrupting source supplies the branch information to the processor through an interrupt vector.

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