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Microprocessor

Microprocessor
In order to complement the lower nibble of accumulator one can use

 ORI 0FH
 CMA
 XRI 0FH
 ANI 0FH

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Microprocessor
How many machine cycles are required for execution of IN 30H instruction

 6
 3
 4
 5

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 20
 220-1
 220
 220 - 1

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Microprocessor
Which of the following is type declaration statement in C?

prin = prin * prin
int bar
king = horse + 1
s = s + 1

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Microprocessor
The control flags in 8086 are:

 the Trap flag(TF).
All of these
 the interrupt flag(IF).
 the direction flag(DF).

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Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross coupled OR
A cross coupled NAND/OR
A pair of cross copled AND
A pair of cross coupled NAND

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