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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 microprocessor
 EPROM
 RAM
 ROM

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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 one of the following interrupt/interrupts is/are only level triggering?

 RST 5.5
 both ‘a’ and ‘b’
 TRAP
 RST 6.5

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Microprocessor
A structure that stores a number of bits taken “together as a unit” is a

Decoder
Gate
Mux
Register

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Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

 1,2 & 4
 1,3 &4
 2,3&4
 1,2 & 3

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

 6
 3
 5
 4

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