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Microprocessor

Microprocessor
Number of Hex digits needed to represent the 20-bit address of a memory location are

 16
 5
 20
 4

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

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Microprocessor
The five flags in 8085 are designated as

Z, CY, S, D, AC
D, Z, S, P, AC
Z, C, S, P, AC
Z, CY, S, P and AC

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

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

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Microprocessor
Which of the following conditions is not allowed in an RS latch?

R is negated, S is negated
R is asserted, S is negated
R is asserted, S is asserted
R is negated, S is asserted

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Microprocessor
In microprocessor based system DMA refers to

 direct memory access for microprocessor
None of these
 direct memory access for the I/O device
 direct memory access for the user

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