Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?

 1, 2 and 3
 1, 2, 3 and 4
 1 and 2 only
 3 and 4 only

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Microprocessor
In a vector interrupt

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

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