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Microprocessor

Microprocessor
RST 3 instruction will cause the processor to branch to the location

 0024H
 0000H
 0018H
 0028H

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Microprocessor
S0 and S1 pins are used for

 serial communication
 indicating the processor’s status
None of these
 acknowledging the interrupt

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

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 To disable data bus
 To latch data D0-D7 from data bus
 To achieve all the functions listed above
 Enable the data bus to be used as low order address bus

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Microprocessor
What is used to access 16-bit data in 8086?

 Pipeline architecture.
 Data Banking.
None of these
 Memory Banking.

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 there is a pin available for serial output
 serial I/O is not possible
 serial I/O is possible through SIM and RIM instruction
 there is a pin available for serial input

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