Re: vhdl code for debouncing push button


"Jim Granville" <no.spam@xxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:488ff776@xxxxxxxxxxxxxxx
Fred wrote:
"Jim Granville" <no.spam@xxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:488f0139$1@xxxxxxxxxxxxxxx

Yes, SPCO and SPDT are effectively interchangable
(change Over/Double Throw) - The venerable Microswitch has that,
as does the Digitast buttons. Digikey shows those for 28c+cap


Hmm SPDT switches come in two varieties. Break before make and make
before break. There is a danger you'll get one where the switch will
momentarily connect all 3 terminals together for a short period of time.
It's important to check and specify you get the right one for this
application.

I have yet to see a Microswitch that is MBB. Got any references of
one that is ?
The mechanical design of uSW and closely related Digitast buttons rather
excludes that.


I agree that many forms of switches are break before make. The thing is I
have come across make before break and they have ended up causing grief.
It's just something I would bear in mind.


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