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Microprocessor

Microprocessor
In Fortran 77 a variable name can contain special characters.

True
False

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Microprocessor
The data bus of any microprocessor is always

 Unidirectional
 Either unidirectional or bi-directional
 Bi-directional
 None

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

64 H
6 AFH
45 H
234

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Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

 incremented by one.
 transferred to address bus.
 transferred to memory address register .
 transferred to memory data register.

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Microprocessor
A field programmable ROM is called

 FPROM
 MROM
 FROM
 PROM

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 XRI FOH
 ANI OFH
 XRI 0FH
 ANI F0H

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