What is a TACTILE pushbutton switch, compared with a MOMENTARY pushbutton switch?
I am pretty sure momentary pushbutton switch is your typical pushbutton that is normally open, and closes as long as you have the button pressed, and opens when you release it. What then is a "tactile" switch?
And i've seen pushbutton switches with a "ground" leg, usually a fifth leg, which is connected to ground (or chassis ground). Is that extra ground leg, usually used to protect against ESD from someone's finger? I really haven't seen a good use for that extra ground leg, since i haven't really heard of anyone frying their circuit due to ESD discharge thru a pushbutton from someone's finger.
Mike