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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 RAM
 microprocessor
 EPROM
 ROM

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Microprocessor
________is the only non-vectored interrupt in 8085 microprocessor.

 INTR
 RST 5.5
 RST 7
 TRAP

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

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

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 220
 220-1
 20
 220 - 1

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Microprocessor
SUB A instruction in 8085

 reset zero and parity flags
 reset carry and sign flags
 sets zero and carry flags
 sets zero and sign flags

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8279
 8251
 8259
 8253

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