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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 RAM
 EPROM
 ROM
 microprocessor

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Microprocessor
Both the ALU and control section of CPU employ which special purpose storage location?

 Decoders
 Accumulators
 Registers
 Buffers

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Microprocessor
The control flags in 8086 are:

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

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Microprocessor
After RESET 8255 will be in

 unchanged condition
 mode 0; all ports are input
 mode 0; all ports are output
 mode 2

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

45 H
6 AFH
234
64 H

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Microprocessor
Identify the non-maskable interrupt from the following

 RST 6.5
 RST 7.5
 RST 4.5
 RST 5.5

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