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Microprocessor

Microprocessor
Which of the following is a valid integer constant?

125 + 3
127
127
127

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 MOV A, 00H
 SUB A
 CLR A
 ORA A

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Microprocessor
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

False
True

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Microprocessor
In 8086 the number of bytes which can be addressed directly is about

1000
100000
one million
10000

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Microprocessor
Which of the following interrupt is both level and edge sensitive?

 RST 5.5
 RST 7.5
 INTR
 TRAP

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Microprocessor
The execution of RST n instruction causes the stack pointer to

 decrement by two
 increment by two
None of these
 remain unaffected

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