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Microprocessor

Microprocessor
Identify the communication interfacing device from the following

 8255
 8257
 8155
 8251

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

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

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 1000 H and 1001 H
 1000 H and 0FFF H
 0FFF H and 0FFE H
 0FFE H and 0FFF H

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Microprocessor
Which memory has read operation, byte erase, byte write and chip erase?

RAM
EEPROM
Both B and C
UVEPROM

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Microprocessor
The number of output pins in 8085 microprocessors are

 40.
 21.
 19.
 27.

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

 CMA
 XRI 0FH
 ORI 0FH
 ANI 0FH

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