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Microprocessor

Microprocessor
Identify the non-programmable interfacing device from the following

 8257.
 8295.
 8255.
 8212.

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Microprocessor
Which of the following conditions is not allowed in an RS latch?

R is negated, S is negated
R is asserted, S is negated
R is negated, S is asserted
R is asserted, S is asserted

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Microprocessor
What is the size (in bytes) of Prefetch queue in 8086?

 4.
 6.
 2.
 3.

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 serial I/O is possible through SIM and RIM instruction
 there is a pin available for serial output
 there is a pin available for serial input
 serial I/O is not possible

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Microprocessor
Identify the programmable DMA controller from the following

 8279
 8257
 8253
 8251

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Microprocessor
Register pair used to indicate memory

 B and C
 H and L
 D and E
 W and Z

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