If you’re not familiar with the 555 timer, suffice it to say that this ... It can also be used in monostable (one-shot) mode, producing a fixed output pulse width in response to a low-going ...

First a bit of history… “the 555 timer contest” that sticks out in our minds is the one conceived of by [Jeri Ellsworth] and assisted by [Chris Gammell] that took place a decade ago.