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Microprocessor

Microprocessor
Maximum number of I/O that can be addressed by the INTEL 8085 is

 256
 65536
 512
 285

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Microprocessor
Which instruction is required to rotate the content of accumulator one bit right along with carry?

 RLC
 RRC
 RAL
 RAR

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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

 00000100
 01000000
 010001000
 11000100

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Microprocessor
If the sign bit of mantissa is 0 and the exponent is increased from a positive to a more negative number the result is

A smaller floating point number
A larger floating point number
A negative floating point number
Either A or B depending on the actual number

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Microprocessor
EPROMs are preferred for storing programs while developing new microprocessor based system. Because of their

 erasable and programmable characteristic
 all the above characteristic
 random access characteristic
 non-volatile characteristic

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

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

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