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Microprocessor

Microprocessor
8085 microprocessor has how many pins

  30.
 41.
  40.
 39.

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Microprocessor
SUB A instruction in 8085

 reset zero and parity flags
 sets zero and carry flags
 sets zero and sign flags
 reset carry and sign flags

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Microprocessor
Temporary registers in 8085 are

 W and Z.
 B and C.
 H and L.
 D and E.

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Microprocessor
When the write enable input is not asserted, the gated D latch _________ its output.

Can not change
Clears
Sets
Complements

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Microprocessor
DMA signal/signals in 8085 is/are

 HLDA.
 READY.
 All.
 HOLD.

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

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