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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 All.
 HLDA.
 HOLD.
 READY.

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Microprocessor
Each instruction in assembly language program has the following fields:Lable fieldMnemonic fieldOperand fieldComment fieldThe correct sequence of these fields is?

2, 1, 3, 4
2, 1, 4, 3
1, 2, 3, 4
1, 2, 4, 3

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Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 A is true but R is false
 Both A & R are true and R is the correct explanation of A
 Both A & R are true but R is not the correct explanation of A
 A is false but R is true

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Microprocessor
The microprocessor issues ALE during first T-state of

 memory READ cycle only
 fetch cycle only
 every machine cycle
 memory WRITE cycle only

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Microprocessor
DMA is used between

 microprocessor and memory
 microprocessor and I/O
 memory and I/O
 none

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Microprocessor
Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

WORD (16 bits)
NIBBLE
DOUBLEWORD (32 bits)
BYTE

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