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Microprocessor

Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8251
 8253
 8259
 8279

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 Arithmatic and Logic operations.
 Instruction fetch.
 Instruction decoding.
 All the above.

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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

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

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Microprocessor
Which of the following is type declaration statement in C?

int bar
prin = prin * prin
king = horse + 1
s = s + 1

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Microprocessor
The minimum number of transistors required to implement a two input AND gate is

8
2
4
6

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Microprocessor
A mask programmed ROM is

 erasable and programmable
 programmed at the time of fabrication
 programmed by the user
 erasable electrically

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