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MCQ

This signal is used as the system clock for devices connected with the microprocessor.

X1, X2

CLK OUT

CLK IN

IO/M

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What is true about Program counter?

It is an 8-bit register, which holds the temporary data of arithmetic and logical operations.

When an instruction is fetched from memory then it is stored in the program counter

It provides timing and control signal to the microprocessor

It is a 16-bit register used to store the memory address location of the next instruction to be executed.

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MCQ

The highest priority interrupt in 8085 is:

TRAP

RST6.5

INTR

RST7.5

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MCQ

In an 8085 microprocessor, which one of the following instructions changes the content of the accumulator?

MOV B, M

PCHL

RNZ

SBI BEH

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MCQ

The program counter (PC) in a micro-processor:

counts the number of programs being executed by the microprocessor

counts the number of instructions being executed by the microprocessor

counts the number of interrupts handled by the microprocessor

keeps the address of the next instruction to be fetched

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MCQ

In 8085 microprocessors, which signal is used to insert wait?

READY

ALE

HOLD

INTR

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Instruction Set of 8086 8088

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