Microprocessor
A microprocessor is ALU

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

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Microprocessor
A good assembly language programmer should use general purpose registers rather than memory in maximum possible ways for data processing. This is because:

 Data processing with registers takes fewer cycles than that with memory
 Data processing with registers is easier than with memory
 Of limited set of instructions for data processing with memory
 Data processing with memory requires more instructions in the program than that with registers

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Microprocessor
In a vector interrupt

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

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