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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 READY.
 All.
 HLDA.

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Microprocessor
The maximum number of seven segment displays that can be connected to 8279 is

 16
 18
 8
 12

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

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

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Remains unchanged
Doubles
Increases by 2^(address bits)/addressability
Halves

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 CLR A
 ORA A
 SUB A
 MOV A, 00H

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Microprocessor
Register pair used to indicate memory

 B and C
 H and L
 W and Z
 D and E

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