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Microprocessor

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

 12
 18
 8
 16

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 ANI F0H
 ANI OFH
 XRI 0FH
 XRI FOH

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Microprocessor
Which memory has read operation, byte erase, byte write and chip erase?

RAM
UVEPROM
Both B and C
EEPROM

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

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Microprocessor
‘Burst refresh’ in DRAM is also called

Distributed refresh
None of these
Concentrated refresh
Hidden refresh

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Microprocessor
Maximum number of I/O that can be addressed by the INTEL 8085 is

 65536
 285
 256
 512

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