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Microprocessor

Microprocessor
Register pair used to indicate memory

 D and E
 H and L
 W and Z
 B and C

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, OV, AC, P, CY
 S, Z, AC, P, CY
 S, Z, OV, P, CY
 S, Z, AC, P, OV

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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?

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

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8259
 8253
 8279
 8251

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Microprocessor
The characteristics of RESET OUT signal is/are

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

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Microprocessor
In C the keywords are also called

Character words
Reserved words
Special words
Class words

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