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Microprocessor

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH SP
 PUSH A
 PUSH PSW
 POP PSW

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Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

 four times the desired frequency
None of these
 twice the desired frequency
 equal to the desired frequency

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Microprocessor
In 8085 which addressing mode is also called inherent addressing?

Direct
Implicit
Immediate
Register

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 00000001
 11111111
 00000000
 None

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Microprocessor
What is SIM?

 Select interrupt mask.
 Sorting interrupt mask.
  Set interrupt mask.
 None of these.

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 D-E
 B-C
 PSW
 Stack Pointer

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