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Microprocessor

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

Complements
Can not change
Sets
Clears

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 1, 2, 5
 1, 3, 5
 2, 3, 5
 1, 3, 4

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Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 POP PSW
 PUSH A
 PUSH PSW
 PUSH SP

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Microprocessor
8085 microprocessor has how many pins

 41.
  40.
  30.
 39.

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has 5 interrupts lines, whereas 6800 has only two
 8085 has multiplexed bus, whereas 6800 does not have
 None
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 both ‘a’ and ‘b’
 TRAP
 RST 5.5
 RST 6.5

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