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Microprocessor

Microprocessor
The number of interrupt lines in 8085 is

5
3
2
4

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Microprocessor
SUB A instruction in 8085

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

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Microprocessor
A mask programmed ROM is

 programmed at the time of fabrication
 programmed by the user
 erasable and programmable
 erasable electrically

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Microprocessor
The relation among IC (Instruction Cycle), FC (Fetch cycle) and EC (Execute Cycle) is

 IC = FC - EC
 IC = FC + EC
 IC = FC + 2EC
 EC = IC + FC

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Microprocessor
IC 7485 cannot be cascadeD.

True
False

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 XRI 0FH
 ANI OFH
 XRI FOH
 ANI F0H

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