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Interview question about bidirectionial pin

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ship_baba

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Dear all,

interview question, is it correct,

one bidirectional pin should connect to two bidirectional pin, is it correct, it breaks my head

regards

baba
 

Re: Interview question

Hi,

You have to add a pulldown resistor in the junction.


Regards,
Kanags
 

Interview question

You can't connect pins directly, try to use a Pull up (Resistor + 1 Transistor).
 

Re: Interview question

Hi,
add a pull-up so that when not input or output, that pin will be high.
 

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