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Microprocessor

Microprocessor
Total number of modes the 8253 can work

 6
 4
 12
 8

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Microprocessor
Which of the following instruction will never affect the zero flag?

 DCR R
 DCX Rp
 XRA R
 ORA R

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Microprocessor
________is the only non-vectored interrupt in 8085 microprocessor.

 INTR
 RST 5.5
 RST 7
 TRAP

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Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 16
 13
 10
 7

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Microprocessor
Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

NIBBLE
DOUBLEWORD (32 bits)
WORD (16 bits)
BYTE

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Microprocessor
Pick out the matching pair

 S0;S1;wait status
 SID; SIM
 HOLD; DMA
 READY; RIM

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