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

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Microprocessor
A high on RESET OUT signifies that

 all the registers of the CPU are being reset
 processing can begin when this signal goes high
 all the registers and counters are being reset
 all the registers and counters are being reset and this signal can be used to reset external support chip

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Microprocessor
The interrupt facility is provided in microprocessor to

 stop the microprocessor when it starts malfunctioning
 keep a control on the working of the microprocessor
 change the sequence of the instructions being executed
 stop the microprocessor when desired

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