From: rike22@bellsouth.net   
      
   "asdf"  wrote in message   
   news:pnem1h$1184$1@gioia.aioe.org...   
   > On Wed, 12 Sep 2018 17:54:46 +0100, Terry Pinnell wrote:   
   >   
   >> My starting assumption is a simple CR filter in front of a Schmitt.   
   >   
   > Yup, that's probably the simplest and cheapest effective way.   
   > But if you need more buttons to be debounced, a uC solution might   
   > be more scalable and simpler so that the filter could be   
   > implemented in software virtually using no components other   
   > than the minumum necessary to have the uC run.   
      
   Look at the MC14490.  Works great.   
      
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