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Microprocessor

Microprocessor
Which of the following is type declaration statement in C?

s = s + 1
prin = prin * prin
king = horse + 1
int bar

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Microprocessor
The multiplexing of address bus and data buses is used in

 none of these.
 never multiplexed.
 all the microprocessors.
 depends on the internal architecture.

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Microprocessor
Total number of modes the 8253 can work

 6
 12
 8
 4

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Microprocessor
A mask programmed ROM is

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

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

 XRA R
 DCX Rp
 ORA R
 DCR R

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Microprocessor
________used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.

 DI
 SIM
 EI
 RIM

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