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Tricky Questions and Answers on 8051

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ITP

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Hi all,

I need help for preparing for an interview. Interview will be based on 8051 microcontroller and its interfacing.

If anybody have "Questions and Answers" type documents on this microcontroller please share.

Regards
Itp
 

No. 1 Question: How to address the bit addressable registers of the 8051 and differentiate it from the byte addressable example.

give an exam
 

No. 2 Question: explain haw Timer2 works in a STANDARD 8051 device

ANSWER( tricky): TIMER2 is NOT implemented in standard 8051 device. It is implemented only in 8052 devices.

No. 3 Question: give an example haw to write code memory using MOVC instruction.

ANSWER(tricky): MOVC instruction can only ne used to READ code memoy. It cannot be used to write (use an dedicated programmer to write in code memory)
 

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