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Microprocessor

Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 12
 18
 16
 8

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Microprocessor
A combinational PLD with a fixed AND array and a programmable OR array is called a

 PLA
 PAL
 PLD
 PROM

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Microprocessor
Identify the communication interfacing device from the following

 8155
 8255
 8251
 8257

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Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross coupled NAND
A pair of cross coupled OR
A pair of cross copled AND
A cross coupled NAND/OR

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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 input
 there is a pin available for serial output
 serial I/O is not possible

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Microprocessor
CALL instruction is a ______ instruction.

 1 bytes
 3 bytes
 4 bytes
 2 bytes

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