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Microprocessor

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

 XRI FOH
 ANI F0H
 XRI 0FH
 ANI OFH

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Microprocessor
________used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.

 SIM
 EI
 RIM
 DI

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 00000001
 None
 00000000
 11111111

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Microprocessor
In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

Arithmetic, assignment, relational
Arithmetic, relational, assignment
Relational, assignment, arithmetic
Assignment, relational, arithmetic

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Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 Z-80
 68000
 8085
 6502

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Microprocessor
‘Burst refresh’ in DRAM is also called

Hidden refresh
None of these
Distributed refresh
Concentrated refresh

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