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Microprocessor

Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

2^m
2*m
log2 (m)
m

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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 multiplexed bus, whereas 6800 does not have
 8085 has 5 interrupts lines, whereas 6800 has only two

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

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Microprocessor
While CMP B instruction executes,

 only carry flag will be affected.
 all flags will be affected.
 only carry and zero flags will be affected.
 no flags will be affected.

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 00000000
 None
 11111111
 00000001

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Microprocessor
The minimum number of transistors required to implement a two input AND gate is

8
2
4
6

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