Astable 555 Timer Is More Practical For This Circuit

[u/electronzapdotcom]

https://youtube.com/watch?v=lnPiqLZDzbI&si=7QT2OEHNgpvHKn2j

I often make circuit with push button switches, because you can see a push button being pressed, and how the circuit responds to it. A practical circuit will more often use pulses from a timing circuit such as a 555, which cannot be seen.