One of the greatest ICs in history.
http://www.righto.com/2016/02/555-timer-teardown-inside-worlds-most.html

Found https://hackaday.com/2018/10/10/the-555-and-how-it-got-that-way/
It's not a bug it's a feature – vincit omnia veritas
One of the greatest ICs in history.
http://www.righto.com/2016/02/555-timer-teardown-inside-worlds-most.html
Found https://hackaday.com/2018/10/10/the-555-and-how-it-got-that-way/
https://diy-projects4u.blogspot.com/2018/09/diy-lan-cable-tester.html?_sm_au_=iVVHnM6F3ZRkm6MH
Hardware
via