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Microprocessor

Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NOR-NAND
NAND-NOR
OR-NAND
NAND-NAND

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Microprocessor
The five flags in 8085 are designated as

Z, CY, S, D, AC
Z, C, S, P, AC
D, Z, S, P, AC
Z, CY, S, P and AC

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

1
-0
-1
+0

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Microprocessor
The characteristics of RESET OUT signal is/are

 the signal is synchronized to the processor clock.
 all.
 this signal can be used to reset other devices.
 indicates that µp is being reset.

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Microprocessor
Identify the non-programmable interfacing device from the following

 8212.
 8295.
 8255.
 8257.

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Microprocessor
Consider the following I) Sign flag II) Trap flag III) Parity flag IV) Auxiliary carry flag. Which one of the above flags is/are present in 8085 microprocessor?

 (I) ,(III) & (IV)
 (I) only
 (I) & (II)
 (II) & (III)

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