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Andre Abelian wrote:
> Hi to all,
> 
> I put together prototype project using keypad with
> individual diodes added to each key and wrote the code
> every things working fine now other group took my project
> and took all diodes off "bypassed" and same project is 
> working fine too I do not see any problem. My question is
> what's the real reason to use diodes with keypad? 
> 
> thanks
> 
> Andre  
> 

I would guess it depends on the arrangement of your keypad, there's more
than one type. Post a link to a datasheet or a circuit diagram and I'm
sure it'll be much easier for us to help you.

- --
Brendan Gillatt | GPG Key: 0xBF6A0D94
brendan {a} brendangillatt (dot) co (dot) uk
http://www.brendangillatt.co.uk
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