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Microprocessor

Microprocessor
Register pair used to indicate memory

 B and C
 D and E
 W and Z
 H and L

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Microprocessor
An 8-bit microprocessor signifies that

 8-bit controller
 8-bit address bus
 8-bit data bus
 8-interrupt lines

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Microprocessor
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

 XTHL & DAD H
 XCHG & DAD H
 XCHG & DAD B
 PCHL & DAD D

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

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

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Microprocessor
EPROMs are preferred for storing programs while developing new microprocessor based system. Because of their

 random access characteristic
 non-volatile characteristic
 all the above characteristic
 erasable and programmable characteristic

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Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

 transferred to memory data register.
 incremented by one.
 transferred to address bus.
 transferred to memory address register .

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