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Microprocessor

Microprocessor
Maximum of how many devices can be connected simultaneously to the microprocessor via 8257 in DMA data transfer mode?

 4
 8
 6
 10

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Microprocessor
SUB A instruction in 8085

 reset zero and parity flags
 sets zero and sign flags
 reset carry and sign flags
 sets zero and carry flags

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 None
 8085 has 5 interrupts lines, whereas 6800 has only two
 8085 has multiplexed bus, whereas 6800 does not have

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Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 Z-80
 68000
 8085
 6502

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Microprocessor
Consider the following I) Sign flag II) Trap flag III) Parity flag IV) Auxiliary carry flag. Which one of the above flags is/are present in 8085 microprocessor?

 (I) ,(III) & (IV)
 (I) & (II)
 (II) & (III)
 (I) only

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Microprocessor
The character set of Fortran 77 includes lower case alphabets a to z.

True
False

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