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Microprocessor

Microprocessor
Register pair used to indicate memory

 D and E
 H and L
 W and Z
 B and C

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Microprocessor
The number of status flags present in 8085 microprocessor are

 8
 16
 10
 5

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 1, 3, 5
 1, 3, 4
 1, 2, 5
 2, 3, 5

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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
Which of the data transfer is not possible in microprocessor

 memory to accumulator
 accumulator to memory
 I/O device to accumulator
 memory to memory

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Microprocessor
Identify the programmable interval timer from the following

 8279
 8275
 8253
 8252

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