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Q&A De-bouncing input signals?

I've heard that input signals to digital circuits should be "de-bounced", at least sometimes. What is de-bouncing? Why is it needed? When is it needed? What is bouncing around in the first place?

2 answers  ·  posted 4y ago by Olin Lathrop‭  ·  last activity 4y ago by Circuit fantasist‭

Question de-bouncing
#1: Initial revision by user avatar Olin Lathrop‭ · 2020-10-20T17:16:59Z (about 4 years ago)
De-bouncing input signals?
I've heard that input signals to digital circuits should be "de-bounced", at least sometimes.  What is de-bouncing?  Why is it needed?  When is it needed?  What is bouncing around in the first place?