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Microprocessor

Microprocessor
Which one of the following microprocessor has 16-bit data bus?

 6502
 8085
 Z-80
 68000

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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
Bus Interface Unit (BIU) in 8086 performs the following functions:

 All the above.
 Instruction fetch.
 Arithmatic and Logic operations.
 Instruction decoding.

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

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Microprocessor
Which of the following instruction is not possible in 8085?

 POP PSW
 POP D
 POP 30 H
 POP B

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 1000 H and 0FFF H
 0FFF H and 0FFE H
 0FFE H and 0FFF H
 1000 H and 1001 H

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