Olin Lathrop wrote:

>David P Harris wrote:
>  
>
>>Instead of having the bits of a counter in a byte, you spread them over
>>several bytes.  The first byte contains the most insignificant bit of a
>>number of counters, the next byte the next significant bits of the
>>counters.  Now you can count all the counters at once using logic
>>operations.  It is useful where you only need 2-3 bits for a counter.
>>So, in this application, you can have 8 2-bit counters in two bytes.
>>    
>>
>
>Which of course has nothing directly to do with debouncing a switch.  This
>is a technique for working on several counters in parallel with fewer
>instruction than it would take to handle each one separately.  But it's
>still using counters, which is how the debouncing is done.  Saying that
>vertical counters is a special debouncing technique is misleading at best.
>  
>
Gee, did I say that?  I don't think so, I was just trying to explain 
vertical counters :-)   I agree, vertical counters is a general 
technique that can be applied to debouncing. 

David


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