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Microprocessor

Microprocessor
Register pair used to indicate memory

 B and C
 H and L
 D and E
 W and Z

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

 PAL
 PROM
 PLD
 PLA

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Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?

 3 and 4 only
 1, 2, 3 and 4
 1 and 2 only
 1, 2 and 3

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Microprocessor
While STC instruction executes,

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

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Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NOR-NAND
OR-NAND
NAND-NAND
NAND-NOR

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

 8
 16
 18
 12

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