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Microprocessor

Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 B-C
 D-E
 PSW
 Stack Pointer

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

 PLD
 PROM
 PAL
 PLA

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Remains unchanged
Halves
Increases by 2^(address bits)/addressability
Doubles

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Microprocessor
RST0 - RST7 are the __________ in 8085.

 logical interrupts
 hardware interrupts
 conditional interrupts
 software interrupts

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Microprocessor
Each instruction in an assembly language program has the following fields 1. Label field 2. Mnemonic field 3. Operand field 4. Comment field What are the correct sequence of these fields?

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

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Microprocessor
‘Burst refresh’ in DRAM is also called

Hidden refresh
Distributed refresh
None of these
Concentrated refresh

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