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Microprocessor

Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 5
 8
 16
 10

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 all bits set (i.e. FFH)
 irrelevant
 all bits reset (i.e. 00H)
 same as the content of A7-A0

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Microprocessor
S0 and S1 pins are used for

None of these
 indicating the processor’s status
 acknowledging the interrupt
 serial communication

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

 PLD
 PROM
 PAL
 PLA

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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

 00000100
 010001000
 11000100
 01000000

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Microprocessor
In microprocessor based system DMA refers to

 direct memory access for the user
 direct memory access for microprocessor
None of these
 direct memory access for the I/O device

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MORE MCQ ON Microprocessor

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