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Microprocessor

Microprocessor
A microprocessor with a 12-bit address bus will be able to access

 10 K bytes
 1 K bytes
 4 K bytes
 8 K bytes

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Microprocessor
Which of the following is a valid integer constant?

127
125 + 3
127
127

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

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

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Microprocessor
Which of the following instruction will never affect the zero flag?

 DCX Rp
 DCR R
 ORA R
 XRA R

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Microprocessor
The characteristics of RESET OUT signal is/are

 indicates that µp is being reset.
 this signal can be used to reset other devices.
 the signal is synchronized to the processor clock.
 all.

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

False
True

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