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Microprocessor

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

 6
 3
 5
 4

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Microprocessor
During OPCODE fetch the state of S0 and S1 is

 01
 10
 00
 11

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Microprocessor
The multiplexing of address bus and data buses is used in

 all the microprocessors.
 never multiplexed.
 none of these.
 depends on the internal architecture.

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Microprocessor
Which of the following instruction is not possible in 8085?

 POP 30 H
 POP PSW
 POP B
 POP D

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Microprocessor
Which of the following is not a general purpose peripheral?

Programmable interval timer
Programmable interrupt controller
I/O port
Programmable CRT controller

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

 CLR A
 MOV A, 00H
 ORA A
 SUB A

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