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Microprocessor

Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

6 AFH
234
64 H
45 H

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

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

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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
 01000000
 00000100
 010001000

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Microprocessor
The number of interrupt lines in 8085 is

3
2
4
5

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Microprocessor
The address bus of any microprocessor is always

 Bi-directional
 Unidirectional
 Either unidirectional or bi-directional
 None

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Microprocessor
A structure that stores a number of bits taken “together as a unit” is a

Mux
Decoder
Register
Gate

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