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Microprocessor

Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 10
 13
 16
 7

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Microprocessor
In C the keywords are also called

Character words
Special words
Reserved words
Class words

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 11000100
 00000100
 010001000
 01000000

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Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross coupled NAND
A pair of cross copled AND
A cross coupled NAND/OR
A pair of cross coupled OR

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Microprocessor
In microprocessor based system DMA refers to

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

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Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 Both A & R are true and R is the correct explanation of A
 Both A & R are true but R is not the correct explanation of A
 A is true but R is false
 A is false but R is true

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