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Microprocessor

Microprocessor
The number of output pins in 8085 microprocessors are

 27.
 21.
 40.
 19.

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Microprocessor
Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

 D-E.
 Stack Pointer.
 H-L.
 Program Counter.

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

 ANI 0FH
 ORI 0FH
 XRI 0FH
 CMA

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 010001000
 01000000
 00000100
 11000100

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Microprocessor
A combinational PLD with a programmable AND array and a programmable OR array is called a

 PLD
 PROM
 PAL
 PLA

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Microprocessor
A mask programmed ROM is

 programmed by the user
 erasable electrically
 programmed at the time of fabrication
 erasable and programmable

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