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Microprocessor

Microprocessor
A microcomputer consists of

 memory
All of these
 I/O device
 a microprocessor

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

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

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Microprocessor
In microprocessor based system I/O ports are used to interface

 all the I/O devices
 the I/P device only
 the I/O devices and memory chips
 the O/P devices only

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

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

 B-C
 D-E
 PSW
 Stack Pointer

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Microprocessor
What is SIM?

  Set interrupt mask.
 Select interrupt mask.
 None of these.
 Sorting interrupt mask.

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