[simpits-tech] keybounce

[Charles Morford]

>From a purely software point of view you have to sample the keys for a change of state on an
input line. Perform a timing loop of x milliseconds and if the condition still exist its probably valid
data. A bit simplistic but you get the idea.

Scan input for change
Any Change?-----Yes Loop for milisec-----Still Changed?-----Yes data valid/perform function and exit.

You could also set a register or variable with data if its not single I/o pins your looking at like hex data. 
You would sample and check for non 0 logic. when the logic is anything but 0 you store the value, loop
for milisec, then compare current value to stored value. If stored value is equal to currently read value>0 then valid data. perform function and clear variable.

Chuck
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