Hi all given many people's schemas purely bank on wait time for debouncing I have given quite a lot of unqualified though to other methods.
1] Why not use an interrupt SR., to determine that the switch has been depressed?
2] Why not use a CD4043B or CD4069B to latch a switch very quickly and with very little current 300 nano amps I think. These two chips are mentiuoned because I've used them often in analogue stuff but if there are others; better, then I'd be pleased to know.
For interrupts: I realise that on some chips the quantity of available pins are very small but hey can't that be managed, the financial overhead is zilch and the requisite hardware for off chip interrupting or latched switching is not present.
For latched switching well its dead fast, 2nd I imagine to on board interrupts, but still very quick positive and bang secure with the first bounced blip over 300nA's doing the business.
There's also RC., circuiting but its messy carries a hardware clumsiness and of course an almost fixed but calculable delay.
I know I could have written a real load of nonsense but forgive that and tell me whats best please.
So come on you guys that really know....................What do you consider the best debounce method.
Confused of Cheshire,