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Microprocessor

Microprocessor
The ROM programmed during manufacturing process itself is called

 MROM
 EPROM
 EEPROM
 PROM

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Microprocessor
Total number of modes the 8253 can work

 6
 4
 8
 12

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Microprocessor
Identify the programmable DMA controller from the following

 8253
 8279
 8257
 8251

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Microprocessor
DMA is used between

 none
 microprocessor and memory
 memory and I/O
 microprocessor and I/O

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Microprocessor
While CMP B instruction executes,

 all flags will be affected.
 only carry flag will be affected.
 only carry and zero flags will be affected.
 no flags will be affected.

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Simplex
 Diplex
 Quadruplex
 Duplex

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